What is the cheapest airline that flies from Buffalo to Denver Intl?

Southwest, Frontier, and Delta are the most popular carriers operating from Buffalo to Denver Intl

How many flights depart from Buffalo to Denver on average per week?

As of October 2026, there are 6 flights per week flying from Buffalo to Denver. The most common day of the week flights depart is Thu, with 33% of flights taking off on this day.

Which airport is the most popular layover for flights between Buffalo and Denver?

Chicago (ORD) was the most common stop: 40% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Buffalo to Denver?

Flights via Washington, D.C. (IAD) offer the lowest average round-trip price of $265.

Which layover airport has the shortest connection time from Buffalo to Denver?

Chicago (MDW) has the shortest average layover time for this route: 0h 50m.

What airlines fly to Denver?

United Airlines, Southwest and Delta are the top three most popular airlines that fly to Denver from Buffalo according to our data. United Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 6 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.

Which layover airport has the shortest travel time from Buffalo to Denver?

Flights connecting via Chicago (MDW) have the shortest average one-way travel time: 5h 39m.

When did momondo last update prices for flights from Buffalo Airport to Denver Intl Airport?

Prices for flights from Buffalo Airport to Denver Intl Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Buffalo Airport to Denver Intl Airport?

The number of operators available for flights from Buffalo Airport to Denver Intl Airport is 6 as of October 2026.

How old do you have to be to fly from Buffalo Airport to Denver Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Buffalo Airport to Denver Intl Airport.

What documentation or ID do you need to fly to Denver Intl Airport?

The travel and health documents you'll need for your trip to Denver Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Denver Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$124 Cheap Flights from Buffalo to Denver in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Buffalo to Denver

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

1:15 pm - 6:29 amBUF Buffalo-DEN Denver Intl

19h 14m1 stop Atlanta Hartsfield-Jackson

10:18 am - 12:20 pmDEN Denver Intl-BUF Buffalo

24h 02m2 stops Dallas/Fort Worth Atlanta Hartsfield-Jackson

$230Frontier

Fri, Dec 4 - Tue, Dec 8

1:15 pm - 7:57 pmBUF Buffalo-DEN Denver Intl

8h 42m1 stop Atlanta Hartsfield-Jackson

8:40 pm - 12:20 pmDEN Denver Intl-BUF Buffalo

37h 40m2 stops Dallas/Fort Worth Atlanta Hartsfield-Jackson

$231Frontier

Wed, Dec 2 - Mon, Dec 14

8:50 am - 10:35 amBUF Buffalo-DEN Denver Intl

3h 45mnonstop

5:25 pm - 10:33 pmDEN Denver Intl-BUF Buffalo

3h 08mnonstop

$331United Airlines

Thu, Nov 19 - Mon, Nov 23

8:50 am - 10:35 amBUF Buffalo-DEN Denver Intl

3h 45mnonstop

5:45 pm - 10:57 pmDEN Denver Intl-BUF Buffalo

3h 12mnonstop

$331United Airlines

Thu, Nov 26 - Thu, Dec 3

2:45 pm - 4:35 pmBUF Buffalo-DEN Denver Intl

3h 50mnonstop

3:45 pm - 8:50 pmDEN Denver Intl-BUF Buffalo

3h 05mnonstop

$331Southwest

Thu, Dec 3 - Tue, Dec 8

2:45 pm - 4:35 pmBUF Buffalo-DEN Denver Intl

3h 50mnonstop

3:45 pm - 8:50 pmDEN Denver Intl-BUF Buffalo

3h 05mnonstop

$331Southwest

Thu, Dec 10 - Tue, Dec 15

12:06 pm - 3:15 pmBUF Buffalo-DEN Denver Intl

5h 09m1 stop Detroit Metropolitan Wayne County

6:10 am - 3:19 pmDEN Denver Intl-BUF Buffalo

7h 09m1 stop Detroit Metropolitan Wayne County

$351Delta

Sat, Dec 5 - Wed, Dec 9

6:41 pm - 11:22 pmBUF Buffalo-DEN Denver Intl

6h 41m1 stop Atlanta Hartsfield-Jackson

7:15 am - 5:36 pmDEN Denver Intl-BUF Buffalo

8h 21m1 stop Atlanta Hartsfield-Jackson

$351Delta

Tue, Dec 1 - Tue, Dec 8

11:26 am - 5:19 pmBUF Buffalo-DEN Denver Intl

7h 53m1 stop Chicago O'Hare Intl

7:15 am - 5:57 pmDEN Denver Intl-BUF Buffalo

8h 42m1 stop Charlotte Douglas

$351American Airlines

Thu, Dec 10 - Mon, Dec 14

11:26 am - 5:19 pmBUF Buffalo-DEN Denver Intl

7h 53m1 stop Chicago O'Hare Intl

8:06 am - 6:03 pmDEN Denver Intl-BUF Buffalo

7h 57m1 stop Chicago O'Hare Intl

$351American Airlines

Wed, Dec 2 - Sat, Dec 5

Cheap last minute flights

Enter your travel dates to find the best prices.

2:00 pm - 9:33 pmBUF Buffalo-DEN Denver Intl

9h 33m1 stop Atlanta Hartsfield-Jackson

10:40 am - 4:47 pmDEN Denver Intl-BUF Buffalo

28h 07m1 stop Orlando

$298Frontier

Wed, Nov 4 - Wed, Nov 11

6:47 pm - 9:47 pmBUF Buffalo-DEN Denver Intl

29h 00m1 stop Raleigh-Durham

10:58 am - 11:44 amDEN Denver Intl-BUF Buffalo

22h 46m1 stop Raleigh-Durham

$358Frontier

Thu, Nov 5 - Sat, Nov 7

2:00 pm - 9:33 pmBUF Buffalo-DEN Denver Intl

9h 33m1 stop Atlanta Hartsfield-Jackson

6:44 pm - 11:59 amDEN Denver Intl-BUF Buffalo

39h 15m3 stops Minneapolis St Paul Orlando Raleigh-Durham

$501Multiple Airlines

Wed, Nov 4 - Fri, Nov 13

2:00 pm - 9:33 pmBUF Buffalo-DEN Denver Intl

9h 33m1 stop Atlanta Hartsfield-Jackson

9:10 pm - 11:59 amDEN Denver Intl-BUF Buffalo

36h 49m3 stops Minneapolis St Paul Orlando Raleigh-Durham

$515Multiple Airlines

Wed, Nov 4 - Fri, Nov 13

11:20 am - 8:13 pmBUF Buffalo-DEN Denver Intl

10h 53m1 stop New York John F Kennedy Intl

1:06 pm - 11:59 pmDEN Denver Intl-BUF Buffalo

8h 53m1 stop Atlanta Hartsfield-Jackson

$799Delta

Wed, Nov 4 - Fri, Nov 13

10:30 am - 2:50 pmBUF Buffalo-DEN Denver Intl

6h 20m1 stop Chicago O'Hare Intl

5:25 pm - 10:33 pmDEN Denver Intl-BUF Buffalo

3h 08mnonstop

$829United Airlines

Wed, Nov 4 - Wed, Nov 11

5:58 pm - 9:48 pmBUF Buffalo-DEN Denver Intl

5h 50m1 stop Chicago O'Hare Intl

9:35 am - 5:02 pmDEN Denver Intl-BUF Buffalo

5h 27m1 stop Chicago O'Hare Intl

$839United Airlines

Wed, Nov 4 - Wed, Nov 11

6:45 pm - 10:54 pmBUF Buffalo-DEN Denver Intl

6h 09m1 stop Chicago O'Hare Intl

7:33 am - 3:50 pmDEN Denver Intl-BUF Buffalo

6h 17m1 stop Dallas/Fort Worth

$840American Airlines

Wed, Nov 4 - Fri, Nov 13

11:20 am - 10:32 pmBUF Buffalo-DEN Denver Intl

13h 12m2 stops New York John F Kennedy Intl Atlanta Hartsfield-Jackson

2:24 pm - 11:59 pmDEN Denver Intl-BUF Buffalo

7h 35m1 stop Atlanta Hartsfield-Jackson

$849Delta

Wed, Nov 4 - Fri, Nov 13

7:03 am - 9:57 pmBUF Buffalo-DEN Denver Intl

16h 54m1 stop Charlotte Douglas

11:07 am - 10:45 pmDEN Denver Intl-BUF Buffalo

9h 38m1 stop Charlotte Douglas

$916American Airlines

Tue, Nov 3 - Sat, Nov 7

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Southwest flights from Buffalo to Denver

Our best Southwest deals on Buffalo to Denver flight tickets

Southwest

Dec 2

BUF5:00 pmBuffalo

7h 40m

1 stop

DEN10:40 pmDenver Intl

Dec 7

DEN3:45 pmDenver Intl

3h 05m

BUF8:50 pmBuffalo

$341

Southwest

Dec 2

BUF3:55 pmBuffalo

8h 45m

2 stops

DEN10:40 pmDenver Intl

Dec 7

DEN3:45 pmDenver Intl

3h 05m

BUF8:50 pmBuffalo

$346

Southwest

Dec 10

BUF2:45 pmBuffalo

3h 50m

DEN4:35 pmDenver Intl

Dec 14

DEN3:45 pmDenver Intl

3h 05m

BUF8:50 pmBuffalo

$351

Frontier flights from Buffalo to Denver

Our best Frontier deals on Buffalo to Denver flight tickets

Frontier

Dec 4

BUF1:15 pmBuffalo

19h 14m

1 stop

DEN6:29 amDenver Intl

Dec 8

DEN10:18 amDenver Intl

24h 02m

2 stops

BUF12:20 pmBuffalo

$230

Frontier

Dec 2

BUF1:15 pmBuffalo

8h 42m

1 stop

DEN7:57 pmDenver Intl

Dec 14

DEN8:40 pmDenver Intl

37h 40m

2 stops

BUF12:20 pmBuffalo

$231

Frontier

Dec 4

BUF1:15 pmBuffalo

19h 14m

1 stop

DEN6:29 amDenver Intl

Dec 8

DEN8:16 pmDenver Intl

14h 04m

1 stop

BUF12:20 pmBuffalo

$232

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BuffaloDenver

BUF Buffalo - DEN Denver Intl

BUFDEN

Buffalo

Fri 12/4

1:15 pm-6:29 am

1 stop19h 14m

Denver Intl

Tue 12/8

10:18 am-12:20 pm

2 stops24h 02m

$230

BuffaloDenver

BUF Buffalo - DEN Denver Intl

BUFDEN

Buffalo

Wed 12/2

1:15 pm-7:57 pm

1 stop8h 42m

Denver Intl

Mon 12/14

8:40 pm-12:20 pm

2 stops37h 40m

$231

Quickest round-trip

BuffaloDenver

BUF Buffalo - DEN Denver Intl

BUFDEN

Buffalo

Thu 11/19

8:50 am-10:35 am

Nonstop3h 45m

Denver Intl

Mon 11/23

5:25 pm-10:33 pm

Nonstop3h 08m

$331

BuffaloDenver

BUF Buffalo - DEN Denver Intl

BUFDEN

Buffalo

Thu 11/26

8:50 am-10:35 am

Nonstop3h 45m

Denver Intl

Thu 12/3

5:45 pm-10:57 pm

Nonstop3h 12m

$331

BuffaloDenver

BUF Buffalo - DEN Denver Intl

BUFDEN

Buffalo

Thu 12/3

2:45 pm-4:35 pm

Nonstop3h 50m

Denver Intl

Tue 12/8

3:45 pm-8:50 pm

Nonstop3h 05m

$331

BuffaloDenver

BUF Buffalo - DEN Denver Intl

BUFDEN

Buffalo

Thu 12/10

2:45 pm-4:35 pm

Nonstop3h 50m

Denver Intl

Tue 12/15

3:45 pm-8:50 pm

Nonstop3h 05m

$331

BuffaloDenver

BUF Buffalo - DEN Denver Intl

BUFDEN

Buffalo

Sat 12/5

12:06 pm-3:15 pm

1 stop5h 09m

Denver Intl

Wed 12/9

6:10 am-3:19 pm

1 stop7h 09m

$351

BuffaloDenver

BUF Buffalo - DEN Denver Intl

BUFDEN

Buffalo

Tue 12/1

6:41 pm-11:22 pm

1 stop6h 41m

Denver Intl

Tue 12/8

7:15 am-5:36 pm

1 stop8h 21m

$351

BuffaloDenver

BUF Buffalo - DEN Denver Intl

BUFDEN

Buffalo

Thu 12/10

11:26 am-5:19 pm

1 stop7h 53m

Denver Intl

Mon 12/14

7:15 am-5:57 pm

1 stop8h 42m

$351

BuffaloDenver

BUF Buffalo - DEN Denver Intl

BUFDEN

Buffalo

Wed 12/2

11:26 am-5:19 pm

1 stop7h 53m

Denver Intl

Sat 12/5

8:06 am-6:03 pm

1 stop7h 57m

$351

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Buffalo to Denver

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

Other information

What is the typical price of a round-trip flight between Buffalo and Denver?

Prices are currently low for flights on this route.

Typical prices usually range from $317 to $447.
The lowest price recently found on this route was $230.

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Buffalo is in May. Flight prices, which tend to average around $388, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in May, then you should wait until November to fly from Buffalo, when ticket prices are also cheap, with an average price of $391.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $448. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $561.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is at noon when flights can be purchased for as low as $429. Flights in the afternoon are often more expensive with an average ticket price of $502.

What is the cheapest Buffalo to Denver Intl flight route?

Fly from Buffalo to Denver Intl for the best Buffalo - Denver Intl flight prices

How far in advance should I book a flight from Buffalo to Denver?

You are more likely to see cheaper flights to Denver from Buffalo when booking weeks ahead of your departure date. In general, you can expect to find flights to Denver for around $432 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Denver from Buffalo for as low as $376 on momondo.

What cabin class options are available on Buffalo to Denver flights?

There are 4 cabin classes available to choose from on Buffalo to Denver flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Buffalo to Denver flights?

No. A direct flight is the cheapest option for a flight between Buffalo to Denver.

How have Buffalo to Denver flight prices changed over time?

As of October 2026, prices for Buffalo to Denver flights are approximately 121% more expensive when compared to flights at the same time last year.

When to book flights from Buffalo to Denver

Are you open to changing your travel dates? Check out the ideal times to fly from Buffalo to Denver according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Buffalo to Denver (BUF to DEN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Buffalo to Denver

Best Price Found	$124
Fastest flight time	3h 45m
Direct flights	Every day
Airports in Denver	1 airport

The best one-way flight to Denver from Buffalo in the past 72 hours is $124. The best round-trip flight deal from Buffalo to Denver found on momondo in the last 72 hours is $230.

The fastest flight from Buffalo to Denver takes 3h 45m

Direct flights go from Buffalo to Denver every day.

There is 1 airport in Denver. From Buffalo there are direct flights to Denver Intl (DEN).

Search flight deals

Frequently asked questions about flying from Buffalo to Denver

How far is Buffalo to Denver Intl by plane?
The straight-line distance from Buffalo to Denver Intl is 1365.6 mi. Typically, this will take 3h 45m by plane in normal conditions.
When did momondo last update prices for flights from Buffalo Airport to Denver Intl Airport?
Prices for flights from Buffalo Airport to Denver Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Buffalo Airport to Denver Intl Airport?
The number of operators available for flights from Buffalo Airport to Denver Intl Airport is 6 as of October 2026.
How old do you have to be to fly from Buffalo Airport to Denver Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Buffalo Airport to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The travel and health documents you'll need for your trip to Denver Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Denver Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Buffalo to Denver?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Buffalo to Denver is Boeing 737-800 (39.29% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (19.64%), Boeing 737-800 Passenger/BBJ2 (winglets) (12.95%), and Boeing 737 (6.92%).
What is the most popular airline from Buffalo to Denver?
Based on momondo bookings for flights between Buffalo and Denver, the leading airline is United Airlines, making up 61% of the total bookings. Other popular airlines include Southwest with 21%, Delta with 7%, and Frontier with 7%.

Best airlines flying from Buffalo to Denver

Compare and see reviews for airlines that fly from Buffalo to Denver with momondo

Airline	Rating	Free Cancellation	Price
JetBlue	PriceFrom $94	Free Cancellation	Rating 7.1 3,075 reviews	Search JetBlue flights
American Airlines	PriceFrom $166	Free Cancellation	Rating 7.0 12,210 reviews	Search American Airlines flights
Frontier	PriceFrom $180	Free Cancellation	Rating 5.5 2,516 reviews	Search Frontier flights
Delta	PriceFrom $218	Free Cancellation	Rating 7.8 8,692 reviews	Search Delta flights
United Airlines	PriceFrom $252	Free Cancellation	Rating 7.3 10,451 reviews	Search United Airlines flights
Southwest	PriceFrom $313	Free Cancellation	Rating 7.9 4,217 reviews	Search Southwest flights

Southwest Flights From Buffalo to Denver
Across 2 Southwest flights from Buffalo to Denver this week, the average price was $486, with the best Southwest deals starting from $313 round-trip. 4,217 users have rated Southwest on momondo, with an average score of 7.9/10.
United Airlines Flights From Buffalo to Denver
United Airlines (7.3/10 from 10,451 reviews) operates around 4 flights from Buffalo to Denver in any given week. The average United Airlines airfare for this route is around $445, with deals from around $252 rare but found on momondo. Referenced prices are for round-trip Buffalo to Denver flight searches in the last 72 hours.

Breckenridge

Estes Park

Black Hawk

Aurora

Fort Collins

Westminster

Lakewood

Boulder

Longmont

Manitou Springs

Greeley

Thornton

Keystone

Centennial

Littleton

Englewood

Cripple Creek

Golden

Winter Park

Greenwood Village

Why use momondo?

Why should I use momondo to find a flight deal from Buffalo to Denver?

It is quick and easy to find Buffalo to Denver flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Denver that suits you.

Can I find flights from Buffalo to Denver with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Buffalo to Denver flights to just show those with flexible booking policies.

How can momondo help me find flights from Buffalo to Denver?

momondo helps you find the best flight between Buffalo and Denver by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Buffalo to Denver right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Buffalo to Denver flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Denver trip

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Airports servicing Colorado

Alamosa Airport

Aspen Pitkin County Airport

Cortez Montezuma County Airport

Colorado Springs Airport

Durango La Plata County Airport

Vail Eagle County Airport

Grand Junction Regnl Airport

Gunnison Airport

Hayden Yampa Valley Airport

Montrose County Airport

Telluride Airport

Cheap flights from Buffalo to Denver from $124

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Buffalo to Denver departing on 11/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Find the cheapest flights from Buffalo to Denver

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Southwest flights from Buffalo to Denver

Our best Southwest deals on Buffalo to Denver flight tickets

Frontier flights from Buffalo to Denver

Our best Frontier deals on Buffalo to Denver flight tickets

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Use the filters below to find and compare flights from Buffalo to Denver that are best for you.

See travel insights to Denver from

How to get the cheapest flight ticket from Buffalo to Denver

What is the typical price of a round-trip flight between Buffalo and Denver?

What is the cheapest month to fly to Denver?

What is the cheapest day to depart on your flight to Denver?

What is the cheapest time of day to depart on your flight to Denver?

What is the cheapest Buffalo to Denver Intl flight route?

How far in advance should I book a flight from Buffalo to Denver?

What cabin class options are available on Buffalo to Denver flights?

Can stopping save me money on Buffalo to Denver flights?

How have Buffalo to Denver flight prices changed over time?

What is the cheapest airline that flies from Buffalo to Denver Intl?

What airlines fly to Denver?

Which airport is the most popular layover for flights between Buffalo and Denver?

Which layover airport offers the lowest fares from Buffalo to Denver?

Which layover airport has the shortest travel time from Buffalo to Denver?

Which layover airport has the shortest connection time from Buffalo to Denver?

How many flights depart from Buffalo to Denver on average per week?

When to book flights from Buffalo to Denver

Cheap Buffalo to Denver (BUF to DEN) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Airports in Denver

Frequently asked questions about flying from Buffalo to Denver

Best airlines flying from Buffalo to Denver

Compare and see reviews for airlines that fly from Buffalo to Denver with momondo

Traveling to a place near Denver?

Why use momondo?

An easier way to manage your Denver trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Colorado

Fly your favorite airline to Denver

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Cabin classes currently available on flights to Denver

List of cabin classes available on flights landing in Denver. Availability may vary depending on flight origin and airline.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

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According to popular flight searches on momondo this year

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