Cheap flights from Portugal to District of Columbia from $354

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Portugal to District of Columbia departing on 11/6. 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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Find the cheapest flights from Portugal to District of Columbia

Recent round-trip flight deals from Portugal to District of Columbia

 Logo
4:55 pm - 5:15 pmLIS-IAD
29h 20m1 stop
 Logo
8:30 pm - 9:30 pmIAD-LIS
20h 00m1 stop
Wed, Nov 5 - Mon, Nov 10
 Logo
4:55 pm - 5:15 pmLIS-IAD
29h 20m1 stop
 Logo
8:30 pm - 9:30 pmIAD-LIS
20h 00m1 stop
Wed, Nov 5 - Mon, Nov 10
TAP AIR PORTUGAL Logo
10:25 pm - 3:20 pmOPO-IAD
21h 55m1 stop
TAP AIR PORTUGAL Logo
10:20 pm - 7:00 pmIAD-OPO
15h 40m1 stop
$498TAP AIR PORTUGAL
Find Deal
Wed, Oct 8 - Tue, Oct 21
TAP AIR PORTUGAL Logo
9:00 am - 3:20 pmOPO-IAD
11h 20m1 stop
TAP AIR PORTUGAL Logo
10:20 pm - 5:00 pmIAD-OPO
13h 40m1 stop
$500TAP AIR PORTUGAL
Find Deal
Tue, Sep 16 - Tue, Sep 23
United Airlines Logo
5:05 am - 1:30 pmLIS-IAD
13h 25m1 stop
United Airlines Logo
9:35 am - 9:20 amIAD-LIS
18h 45m1 stop
$539United Airlines
Find Deal
Thu, Oct 9 - Thu, Oct 23
United Airlines Logo
5:05 am - 3:50 pmLIS-IAD
15h 45m1 stop
United Airlines Logo
10:20 pm - 9:50 pmIAD-LIS
18h 30m1 stop
$544United Airlines
Find Deal
Thu, Oct 2 - Thu, Oct 9
Lufthansa Logo
5:05 am - 3:50 pmLIS-IAD
15h 45m1 stop
Lufthansa Logo
10:15 pm - 10:30 amIAD-LIS
7h 15mnonstop
$550Lufthansa
Find Deal
Thu, Oct 9 - Thu, Oct 23
British Airways Logo
8:20 am - 5:30 pmOPO-IAD
13h 10m1 stop
British Airways Logo
6:20 pm - 8:00 pmIAD-OPO
20h 40m2 stops
$555British Airways
Find Deal
Sun, Oct 26 - Sun, Nov 2
Lufthansa Logo
12:20 pm - 3:45 pmLIS-IAD
8h 25mnonstop
Lufthansa Logo
10:20 pm - 10:35 amIAD-LIS
7h 15mnonstop
$558Lufthansa
Find Deal
Thu, Sep 25 - Sat, Oct 11
British Airways Logo
6:55 pm - 8:20 pmLIS-IAD
30h 25m1 stop
British Airways Logo
10:50 pm - 10:05 amIAD-LIS
30h 15m1 stop
$565British Airways
Find Deal
Sat, Oct 11 - Sat, Oct 18

Scandinavian Airlines flights from Portugal to District of Columbia

Our best Scandinavian Airlines deals on Portugal to District of Columbia flight tickets
Scandinavian Airlines
Nov 5
LIS4:55 pmLisbon Humberto Delgado
29h 20m
1 stop
IAD5:15 pmWashington, D.C. Dulles Intl
Nov 10
IAD7:59 pmWashington, D.C. Dulles Intl
39h 06m
2 stops
LIS4:05 pmLisbon Humberto Delgado
Scandinavian Airlines
Oct 10
OPO5:55 pmPorto
31h 04m
1 stop
IAD7:59 pmWashington, D.C. Dulles Intl
Oct 23
IAD10:05 pmWashington, D.C. Dulles Intl
14h 00m
1 stop
OPO5:05 pmPorto

SWISS flights from Portugal to District of Columbia

Our best SWISS deals on Portugal to District of Columbia flight tickets
SWISS
Sep 5
OPO8:40 amPorto
12h 35m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
Sep 21
IAD8:45 pmWashington, D.C. Dulles Intl
30h 10m
1 stop
OPO7:55 amPorto
SWISS
Sep 11
LIS5:55 amLisbon Humberto Delgado
15h 20m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
Sep 27
IAD8:45 pmWashington, D.C. Dulles Intl
21h 35m
1 stop
LIS11:20 pmLisbon Humberto Delgado
SWISS
Oct 14
LIS5:55 amLisbon Humberto Delgado
15h 20m
1 stop
IAD4:15 pmWashington, D.C. Dulles Intl
Oct 19
IAD8:45 pmWashington, D.C. Dulles Intl
21h 35m
1 stop
LIS11:20 pmLisbon Humberto Delgado

momondo Fare Finder

 
Customize your flight search to find flights from Portugal to District of Columbia that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Portugal to District of Columbia that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 11/5

4:55 pm-5:15 pm

1 stop29h 20m

Washington, D.C. Dulles Intl

Mon 11/10

8:30 pm-9:30 pm

1 stop20h 00m

$485

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Wed 11/5

4:55 pm-5:15 pm

1 stop29h 20m

Washington, D.C. Dulles Intl

Mon 11/10

8:30 pm-9:30 pm

1 stop20h 00m

$490

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Wed 10/8

10:25 pm-3:20 pm

1 stop21h 55m

Washington, D.C. Dulles Intl

Tue 10/21

10:20 pm-7:00 pm

1 stop15h 40m

$498

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Tue 9/16

9:00 am-3:20 pm

1 stop11h 20m

Washington, D.C. Dulles Intl

Tue 9/23

10:20 pm-5:00 pm

1 stop13h 40m

$500

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 10/9

5:05 am-1:30 pm

1 stop13h 25m

Washington, D.C. Dulles Intl

Thu 10/23

9:35 am-9:20 am

1 stop18h 45m

$539

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 10/2

5:05 am-3:50 pm

1 stop15h 45m

Washington, D.C. Dulles Intl

Thu 10/9

10:20 pm-9:50 pm

1 stop18h 30m

$544

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 10/9

5:05 am-3:50 pm

1 stop15h 45m

Washington, D.C. Dulles Intl

Thu 10/23

10:15 pm-10:30 am

Nonstop7h 15m

$550

PortoWashington, D.C.

OPO - IAD

OPOIAD

Porto

Sun 10/26

8:20 am-5:30 pm

1 stop13h 10m

Washington, D.C. Dulles Intl

Sun 11/2

6:20 pm-8:00 pm

2 stops20h 40m

$555

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Thu 9/25

12:20 pm-3:45 pm

Nonstop8h 25m

Washington, D.C. Dulles Intl

Sat 10/11

10:20 pm-10:35 am

Nonstop7h 15m

$558

LisbonWashington, D.C.

LIS - IAD

LISIAD

Lisbon Humberto Delgado

Sat 10/11

6:55 pm-8:20 pm

1 stop30h 25m

Washington, D.C. Dulles Intl

Sat 10/18

10:50 pm-10:05 am

1 stop30h 15m

$565

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See travel insights to District of Columbia from

How to get the cheapest flight ticket from Portugal to District of Columbia

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

What is the cheapest month to fly to District of Columbia?

In general, September is the cheapest month to fly from Portugal to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $521. If you don’t want to visit District of Columbia in September, then you should wait until March to fly from Portugal, when ticket prices are also cheap, with an average price of $560.

What is the cheapest day to depart on your flight to District of Columbia?

The cheapest day to depart on your flight to District of Columbia is on a Sunday when prices can be found for as low as $715. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Portugal because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $881.

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

Flying to District of Columbia from Portugal at noon is the least expensive time of day to depart. momondo users have found prices as low as $484 when looking at flights departing at noon. Flights to District of Columbia are more costly in the morning, with an average ticket price of $776. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Portugal to District of Columbia flight route?

Fly from Lisbon Humberto Delgado to Washington, D.C. Dulles Intl for the best Portugal - District of Columbia flight prices

How far in advance should I book a flight to District of Columbia?

You are more likely to see cheaper flights to District of Columbia from Portugal when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $712 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from Portugal for as low as $573 on momondo.

What cabin class options are available on Portugal to District of Columbia flights?

There are 3 cabin classes available to choose from on Portugal to District of Columbia 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 Portugal to District of Columbia flights?

You could potentially save up to 10% on your flight if you consider stops on a Portugal to District of Columbia flight.

Cheap Portugal to District of Columbia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Portugal to District of Columbia

Best Price Found

$689

Fastest flight time

8h 15m

Direct flights

Every day

Airports in District of Columbia

1 airport
The best one-way flight to District of Columbia from Portugal in the past 72 hours is $689. The best round-trip flight deal from Portugal to District of Columbia found on momondo in the last 72 hours is $727.
The fastest flight from Portugal to District of Columbia takes 8h 15m
Direct flights go from Portugal to District of Columbia every day.
There is 1 airport near District of Columbia: Washington, D.C. Dulles Intl (IAD)
  • When did momondo last update prices for flights from Portugal to District of Columbia?

    Prices for flights from Portugal to District of Columbia were last updated today.

  • How many operators does momondo search for flights from Portugal to District of Columbia?

  • How old do you have to be to fly from Portugal to District of Columbia?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Portugal to District of Columbia.

  • What documentation or ID do you need to fly to District of Columbia?

    The required travel and health documents for your District of Columbia trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at District of Columbia. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Portugal to District of Columbia?

Best airlines flying from Portugal to District of Columbia

Compare and see reviews for airlines that fly from Portugal to District of Columbia with momondo
Airline
Rating
Free Cancellation
Price
TAP AIR PORTUGALPriceFrom $492Free CancellationRating
7.1
1,956 reviews
Search TAP AIR PORTUGAL flights
British AirwaysPriceFrom $493Free CancellationRating
6.7
7,289 reviews
Search British Airways flights
United AirlinesPriceFrom $534Free CancellationRating
7.4
8,928 reviews
Search United Airlines flights
LufthansaPriceFrom $536Free CancellationRating
6.8
7,337 reviews
Search Lufthansa flights

Why use momondo?

Why should I use momondo to find a flight deal from Portugal to District of Columbia?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portugal to District of Columbia. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Portugal to District of Columbia with flexible booking policies on momondo?

Flights from Portugal to District of Columbia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Portugal to District of Columbia?

Once you have performed a search for Portugal to District of Columbia 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 Portugal to District of Columbia right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to District of Columbia from Portugal. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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1 adult
Mon 8/25
Mon 9/1

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