Which layover airport offers the lowest fares from St. Louis to Budapest?

Flights via Frankfurt am Main (FRA) offer the lowest average round-trip price of $964.

Which airport is the most popular layover for flights between St. Louis and Budapest?

Frankfurt am Main (FRA) was the most common stop: 95% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport has the shortest travel time from St. Louis to Budapest?

Flights connecting via Frankfurt am Main (FRA) have the shortest average one-way travel time: 13h 29m.

Which layover airport has the shortest connection time from St. Louis to Budapest?

Philadelphia (PHL) has the shortest average layover time for this route: 2h 13m.

What is the cheapest airline that flies from Lambert-St Louis to Budapest Ferenc Liszt Intl?

American Airlines, United Airlines, and Lufthansa are the most popular carriers operating from Lambert-St Louis to Budapest Ferenc Liszt Intl

What airlines fly to Budapest?

Lufthansa, United Airlines and British Airways are the top three most popular airlines that fly to Budapest from St. Louis according to our data. Lufthansa is the first choice among our users, with 50% of people opting to fly with this airline when traveling to Budapest. Keep in mind that there are 3 different airlines that fly to Budapest on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport?

Prices for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport?

As of August 2026, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport.

How old do you have to be to fly from Lambert-St Louis Airport to Budapest Ferenc Liszt 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 Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport.

What documentation or ID do you need to fly to Budapest Ferenc Liszt Intl Airport?

The travel and health documents required for your trip to Budapest Ferenc Liszt Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Budapest Ferenc Liszt Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$342 Cheap Flights from St. Louis to Budapest in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Budapest

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

9:40 am - 4:25 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

23h 45m2 stops Chicago O'Hare Intl Munich Franz Josef Strauss

6:40 am - 1:45 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

14h 05m1 stop Frankfurt am Main

$773United Airlines

Wed, Feb 10 - Fri, Feb 12

7:33 am - 4:25 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

25h 52m3 stops Chicago O'Hare Intl Boston Logan Intl Munich Franz Josef Strauss

6:40 am - 1:45 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

14h 05m1 stop Frankfurt am Main

$773United Airlines

Wed, Feb 10 - Fri, Feb 12

7:33 am - 12:40 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

22h 07m3 stops Chicago O'Hare Intl Boston Logan Intl Munich Franz Josef Strauss

6:20 am - 4:40 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

17h 20m2 stops Brussels Bruxelles-National Newark

$784United Airlines

Wed, Feb 10 - Fri, Feb 12

4:05 pm - 5:50 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

42h 45m2 stops Toronto Pearson Intl Frankfurt am Main

10:00 am - 3:26 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

36h 26m2 stops Frankfurt am Main Toronto Pearson Intl

$841Air Canada

Sat, Dec 26 - Sat, Jan 9

4:05 pm - 5:50 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

42h 45m2 stops Toronto Pearson Intl Frankfurt am Main

11:40 am - 1:45 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

33h 05m1 stop Frankfurt am Main

$855Multiple Airlines

Sat, Dec 26 - Sat, Jan 9

4:05 pm - 5:50 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

42h 45m2 stops Toronto Pearson Intl Frankfurt am Main

11:40 am - 1:45 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

33h 05m1 stop Frankfurt am Main

$865Multiple Airlines

Sat, Dec 26 - Sat, Jan 9

3:30 pm - 10:55 amSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

12h 25m1 stop Frankfurt am Main

2:25 pm - 1:25 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

30h 00m1 stop Frankfurt am Main

$951Lufthansa

Sun, Oct 11 - Sat, Oct 17

6:58 pm - 11:00 amSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

33h 02m2 stops Chicago O'Hare Intl Frankfurt am Main

11:40 am - 1:45 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

33h 05m1 stop Frankfurt am Main

$1,018Lufthansa

Tue, Dec 22 - Tue, Jan 5

4:32 pm - 11:20 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

23h 48m2 stops Chicago O'Hare Intl London Heathrow

11:55 am - 12:16 amBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

19h 21m2 stops London Heathrow Dallas/Fort Worth

$1,194British Airways

Mon, Dec 21 - Fri, Jan 1

1:51 pm - 11:00 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

26h 09m2 stops Chicago O'Hare Intl London Heathrow

6:50 am - 10:22 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

22h 32m2 stops London Heathrow Chicago O'Hare Intl

$1,226British Airways

Sun, Dec 20 - Fri, Jan 1

Cheap last minute flights

Enter your travel dates to find the best prices.

10:53 am - 1:55 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

20h 02m2 stops Chicago O'Hare Intl Zurich

11:45 am - 2:15 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

33h 30m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$963United Airlines

Tue, Sep 1 - Wed, Sep 9

7:25 am - 1:55 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

23h 30m2 stops Chicago O'Hare Intl Zurich

11:45 am - 2:15 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

33h 30m2 stops Toronto Pearson Intl Chicago O'Hare Intl

$963United Airlines

Tue, Sep 1 - Wed, Sep 9

4:50 pm - 5:40 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

17h 50m2 stops Chicago O'Hare Intl London Heathrow

10:05 am - 9:44 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

18h 39m1 stop Philadelphia

$966American Airlines

Tue, Sep 1 - Wed, Sep 9

1:25 pm - 2:05 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

17h 40m2 stops Chicago O'Hare Intl London Heathrow

10:05 am - 9:44 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

18h 39m1 stop Philadelphia

$967British Airways

Tue, Sep 1 - Wed, Sep 9

11:22 am - 8:10 amSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

13h 48m1 stop Philadelphia

10:05 am - 9:44 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

18h 39m1 stop Philadelphia

$970Iberia

Tue, Sep 1 - Wed, Sep 9

4:50 pm - 5:40 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

17h 50m2 stops Chicago O'Hare Intl London Heathrow

10:05 am - 10:42 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

19h 37m2 stops Philadelphia Charlotte Douglas

$971American Airlines

Tue, Sep 1 - Wed, Sep 9

8:30 am - 8:10 amSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

16h 40m1 stop Philadelphia

10:05 am - 9:24 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

18h 19m2 stops Philadelphia Washington, D.C. Reagan-National

$974American Airlines

Tue, Sep 1 - Wed, Sep 9

8:34 am - 8:10 amSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

16h 36m2 stops Charlotte Douglas Philadelphia

10:05 am - 10:42 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

19h 37m2 stops Philadelphia Charlotte Douglas

$974American Airlines

Tue, Sep 1 - Wed, Sep 9

6:00 am - 10:50 amSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

45h 50m3 stops Los Angeles Los Angeles Hong Kong Intl London Heathrow

11:45 am - 6:38 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

37h 53m3 stops London Heathrow Hong Kong Intl Seattle/Tacoma Intl

$13,058Multiple Airlines

Tue, Sep 1 - Wed, Sep 9

9:32 am - 1:35 pmSTL Lambert-St Louis-BUD Budapest Ferenc Liszt Intl

45h 03m3 stops Chicago O'Hare Intl Hong Kong Intl London Heathrow

7:55 am - 6:38 pmBUD Budapest Ferenc Liszt Intl-STL Lambert-St Louis

41h 43m3 stops London Heathrow Hong Kong Intl Seattle/Tacoma Intl

$13,058Multiple Airlines

Tue, Sep 1 - Wed, Sep 9

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United Airlines flights from St. Louis to Budapest

Our best United Airlines deals on St. Louis to Budapest flight tickets

United Airlines

Feb 10

STL7:33 amLambert-St Louis

25h 52m

3 stops

BUD4:25 pmBudapest Ferenc Liszt Intl

Feb 12

BUD6:40 amBudapest Ferenc Liszt Intl

14h 05m

1 stop

STL1:45 pmLambert-St Louis

$773

United Airlines

Feb 10

STL7:33 amLambert-St Louis

22h 07m

3 stops

BUD12:40 pmBudapest Ferenc Liszt Intl

Feb 12

BUD6:20 amBudapest Ferenc Liszt Intl

17h 20m

2 stops

STL4:40 pmLambert-St Louis

$784

United Airlines

Feb 10

STL1:08 pmLambert-St Louis

17h 32m

2 stops

BUD1:40 pmBudapest Ferenc Liszt Intl

Feb 12

BUD6:40 amBudapest Ferenc Liszt Intl

14h 05m

1 stop

STL1:45 pmLambert-St Louis

$786

Air Canada flights from St. Louis to Budapest

Our best Air Canada deals on St. Louis to Budapest flight tickets

Air Canada

Dec 26

STL4:05 pmLambert-St Louis

42h 45m

2 stops

BUD5:50 pmBudapest Ferenc Liszt Intl

Jan 9

BUD10:00 amBudapest Ferenc Liszt Intl

36h 26m

2 stops

STL3:26 pmLambert-St Louis

$841

Air Canada

Oct 6

STL8:55 amLambert-St Louis

17h 45m

1 stop

BUD9:40 amBudapest Ferenc Liszt Intl

Oct 13

BUD9:30 amBudapest Ferenc Liszt Intl

17h 50m

2 stops

STL8:20 pmLambert-St Louis

$877

Air Canada

Sep 19

STL8:30 amLambert-St Louis

18h 10m

2 stops

BUD9:40 amBudapest Ferenc Liszt Intl

Sep 26

BUD11:45 amBudapest Ferenc Liszt Intl

18h 14m

2 stops

STL10:59 pmLambert-St Louis

$1,044

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Wed 2/10

9:40 am-4:25 pm

2 stops23h 45m

Budapest Ferenc Liszt Intl

Fri 2/12

6:40 am-1:45 pm

1 stop14h 05m

$773

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Wed 2/10

7:33 am-4:25 pm

3 stops25h 52m

Budapest Ferenc Liszt Intl

Fri 2/12

6:40 am-1:45 pm

1 stop14h 05m

$773

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Wed 2/10

7:33 am-12:40 pm

3 stops22h 07m

Budapest Ferenc Liszt Intl

Fri 2/12

6:20 am-4:40 pm

2 stops17h 20m

$784

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Sat 12/26

4:05 pm-5:50 pm

2 stops42h 45m

Budapest Ferenc Liszt Intl

Sat 1/9

10:00 am-3:26 pm

2 stops36h 26m

$841

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Sat 12/26

4:05 pm-5:50 pm

2 stops42h 45m

Budapest Ferenc Liszt Intl

Sat 1/9

11:40 am-1:45 pm

1 stop33h 05m

$855

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Sat 12/26

4:05 pm-5:50 pm

2 stops42h 45m

Budapest Ferenc Liszt Intl

Sat 1/9

11:40 am-1:45 pm

1 stop33h 05m

$865

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Sun 10/11

3:30 pm-10:55 am

1 stop12h 25m

Budapest Ferenc Liszt Intl

Sat 10/17

2:25 pm-1:25 pm

1 stop30h 00m

$951

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Tue 12/22

6:58 pm-11:00 am

2 stops33h 02m

Budapest Ferenc Liszt Intl

Tue 1/5

11:40 am-1:45 pm

1 stop33h 05m

$1,018

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Mon 12/21

4:32 pm-11:20 pm

2 stops23h 48m

Budapest Ferenc Liszt Intl

Fri 1/1

11:55 am-12:16 am

2 stops19h 21m

$1,194

St. LouisBudapest

STL Lambert-St Louis - BUD Budapest Ferenc Liszt Intl

STLBUD

Lambert-St Louis

Sun 12/20

1:51 pm-11:00 pm

2 stops26h 09m

Budapest Ferenc Liszt Intl

Fri 1/1

6:50 am-10:22 pm

2 stops22h 32m

$1,226

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 St. Louis to Budapest

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

What is the typical price of a round-trip flight between St. Louis and Budapest?

Prices are currently low for flights on this route.

Typical prices usually range from $1,095 to $1,324.
The lowest price recently found on this route was $772.

What is the cheapest month to fly to Budapest?

The cheapest month to fly to Budapest from St. Louis is in October. Flight prices, which tend to average around $616, are often lower during this time because this is during the off-season. The month of November is another great option to travel to Budapest, with average flight prices from St. Louis averaging around $712.

Can stopping save me money on St. Louis to Budapest flights?

You could potentially save up to 3% on your flight if you consider stops on a St. Louis to Budapest flight.

When to book flights from St. Louis to Budapest

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

Estimated round-trip price

Cheap St. Louis to Budapest (STL to BUD) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Budapest

Best Price Found	$342
Fastest flight time	20h 02m
Direct flights	None

The best one-way flight to Budapest from St. Louis in the past 72 hours is $342. The best round-trip flight deal from St. Louis to Budapest found on momondo in the last 72 hours is $773.

The fastest flight from St. Louis to Budapest takes 20h 02m

There are no direct flights from St. Louis to Budapest. There are no popular flight routes from St. Louis to Budapest.

Search flight deals

Frequently asked questions about flying from St. Louis to Budapest

How far is Lambert-St Louis to Budapest Ferenc Liszt Intl by plane?
The straight-line distance from Lambert-St Louis to Budapest Ferenc Liszt Intl is 5065.8 mi. A reasonable flight in good conditions will take 20h 02m.
When did momondo last update prices for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport?
Prices for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport?
As of August 2026, there are 3 operators available to choose from for flights from Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport.
How old do you have to be to fly from Lambert-St Louis Airport to Budapest Ferenc Liszt 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 Lambert-St Louis Airport to Budapest Ferenc Liszt Intl Airport.
What documentation or ID do you need to fly to Budapest Ferenc Liszt Intl Airport?
The travel and health documents required for your trip to Budapest Ferenc Liszt Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Budapest Ferenc Liszt Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from St. Louis to Budapest?
Based on momondo bookings for flights between St. Louis and Budapest, the leading airline is Lufthansa, making up 50% of the total bookings. Other popular airlines include United Airlines with 31% and British Airways with 19%.

Best airlines flying from St. Louis to Budapest

Compare and see reviews for airlines that fly from St. Louis to Budapest with momondo

Airline	Rating	Free Cancellation	Price
Lufthansa	PriceFrom $468	Free Cancellation	Rating 6.8 8,225 reviews	Search Lufthansa flights
United Airlines	PriceFrom $578	Free Cancellation	Rating 7.4 10,132 reviews	Search United Airlines flights
British Airways	PriceFrom $825	Free Cancellation	Rating 6.7 8,194 reviews	Search British Airways flights

Siófok

Szeged

Eger

Kecskemét

Szentendre

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Budapest?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Budapest from St. Louis.

Can I find flights from St. Louis to Budapest with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Budapest flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Budapest?

Once you have performed a search for St. Louis to Budapest flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from St. Louis to Budapest now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Budapest and let you know when they change.

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Cheap flights from St. Louis to Budapest from $342

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Budapest departing on 2/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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United Airlines flights from St. Louis to Budapest

Our best United Airlines deals on St. Louis to Budapest flight tickets

Air Canada flights from St. Louis to Budapest

Our best Air Canada deals on St. Louis to Budapest flight tickets

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See travel insights to Budapest from

How to get the cheapest flight ticket from St. Louis to Budapest

What is the typical price of a round-trip flight between St. Louis and Budapest?

What is the cheapest month to fly to Budapest?

Can stopping save me money on St. Louis to Budapest flights?

What is the cheapest airline that flies from Lambert-St Louis to Budapest Ferenc Liszt Intl?

What airlines fly to Budapest?

Which airport is the most popular layover for flights between St. Louis and Budapest?

Which layover airport offers the lowest fares from St. Louis to Budapest?

Which layover airport has the shortest travel time from St. Louis to Budapest?

Which layover airport has the shortest connection time from St. Louis to Budapest?

When to book flights from St. Louis to Budapest

Cheap St. Louis to Budapest (STL to BUD) flight deals and tips

Best Price Found

Fastest flight time

Direct flights

Frequently asked questions about flying from St. Louis to Budapest

Best airlines flying from St. Louis to Budapest

Compare and see reviews for airlines that fly from St. Louis to Budapest with momondo

Traveling to a place near Budapest?

Why use momondo?

An easier way to manage your Budapest 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 Hungary

Airports servicing Hungary

Fly your favorite airline to Budapest

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

Cabin classes currently available on flights to Budapest

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

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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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