$375 Find Cheap Flights from Reagan Washington National Airport to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Reagan-National to Portugal departing on 6/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Portugal

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Reagan-National to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon2 stops$717
Porto
Porto1 stop$802
Faro
Faro2 stops$880
Funchal
Funchal2 stops$1,016
Ponta Delgada
Ponta Delgada2 stops$927
Lisbon
Lisbon2 stops$717
Porto
Porto1 stop$802
Faro
Faro2 stops$880
Funchal
Funchal2 stops$1,016
Ponta Delgada
Ponta Delgada2 stops$927

Book Cheap Reagan-National to Portugal Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Reagan-National to Portugal that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Reagan-National to Portugal

Tue, Sep 8 - Wed, Sep 16
Scandinavian Airlines Logo
11:00 am - 3:35 pm
DCA
-
LIS
23h 35m
2 stops
Scandinavian Airlines Logo
4:25 pm - 11:12 pm
LIS
-
DCA
35h 47m
2 stops
$717Scandinavian Airlines
Tue, Sep 1 - Wed, Sep 9
Multiple Airlines Logo
11:00 am - 3:35 pm
DCA
-
LIS
23h 35m
2 stops
Multiple Airlines Logo
7:15 am - 9:50 pm
LIS
-
DCA
19h 35m
2 stops
$722Multiple Airlines
Tue, Sep 15 - Tue, Sep 22
Multiple Airlines Logo
11:00 am - 11:00 pm
DCA
-
LIS
31h 00m
2 stops
Multiple Airlines Logo
9:15 pm - 9:50 pm
LIS
-
DCA
29h 35m
2 stops
$729Multiple Airlines
Tue, Sep 1 - Tue, Sep 15
Multiple Airlines Logo
11:00 am - 3:35 pm
DCA
-
LIS
23h 35m
2 stops
Multiple Airlines Logo
12:45 pm - 11:12 pm
LIS
-
DCA
39h 27m
2 stops
$735Multiple Airlines
Tue, Sep 22 - Tue, Oct 13
Air Canada Logo
4:20 pm - 7:00 am
DCA
-
OPO
9h 40m
1 stop
Air Canada Logo
12:15 pm - 12:00 pm
OPO
-
DCA
28h 45m
2 stops
$802Air Canada
Sun, Sep 27 - Wed, Sep 30
Air Canada Logo
12:40 pm - 7:00 am
DCA
-
OPO
37h 20m
2 stops
Air Canada Logo
12:45 pm - 3:40 pm
OPO
-
DCA
31h 55m
1 stop
$803Air Canada
Tue, Sep 22 - Thu, Oct 15
United Airlines Logo
4:20 pm - 7:00 am
DCA
-
OPO
9h 40m
1 stop
United Airlines Logo
12:35 pm - 7:48 pm
OPO
-
DCA
12h 13m
1 stop
$809United Airlines
Mon, Sep 21 - Thu, Oct 15
United Airlines Logo
4:30 pm - 6:55 am
DCA
-
OPO
9h 25m
1 stop
United Airlines Logo
12:35 pm - 7:48 pm
OPO
-
DCA
12h 13m
1 stop
$810United Airlines
Mon, Sep 21 - Tue, Oct 13
American Airlines Logo
1:38 pm - 7:40 am
DCA
-
OPO
13h 02m
2 stops
American Airlines Logo
8:20 am - 10:15 pm
OPO
-
DCA
18h 55m
2 stops
$815American Airlines
Tue, Jul 28 - Sun, Aug 2
TAP AIR PORTUGAL Logo
5:59 pm - 4:30 pm
DCA
-
SMA
42h 31m
2 stops
TAP AIR PORTUGAL Logo
5:20 pm - 9:50 pm
SMA
-
DCA
32h 30m
2 stops
$2,955TAP AIR PORTUGAL
Booking Insights

KAYAK's insights & trends for Reagan-National to Portugal flights

Get data-powered insights and trends into flights from Reagan-National to Portugal to help you find the cheapest flights, the best time to fly and much more.

Which airlines fly non-stop between Washington, D.C. Reagan-National Airport and Portugal?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Washington, D.C. Reagan-National Airport to Portugal.

There is just one airline that flies from Washington, D.C. Reagan-National Airport to Portugal direct and that is United Airlines. The best round-trip deal found from United Airlines for the route is to Lisbon (LIS) and costs $759.

Which airlines provide the cheapest flights from Washington, D.C. Reagan-National Airport to Portugal?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Washington, D.C. Reagan-National Airport to Portugal were found on Delta ($909) and Scandinavian Airlines ($982).

Good to know

Low seasonNovember
Cheapest flight$402
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 11% lower on average.
Flight from Reagan Washington National Airport to Lisbon

FAQs - booking Portugal flights

  • How does KAYAK find such low prices on flights from Reagan Washington National Airport to Portugal?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Reagan Washington National Airport to Portugal.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Reagan Washington National Airport to Portugal?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Reagan Washington National Airport to Portugal is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Reagan Washington National Airport to Portugal?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Reagan Washington National Airport to Portugal with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Reagan Washington National Airport to Portugal?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Reagan Washington National Airport to Portugal up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Reagan-National to Portugal

 
Need help choosing which airline to fly with from Reagan-National to Portugal? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9569 reviews
7.1Entertainment
6.6Food
8.1Crew
7.7Boarding
7.3Comfort
Airline reviews

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

4.0 OkayAllison, Apr 2026
DCA - ORD
Read more United Airlines reviews

After arriving in Chicago, we were taxiing for 1.5 hours with infrequent and untruthful updates about the amount of time it would take to arrive at the gate. Minimally, the team could have provided timing expectations that were more truthful, especially one their original expectations were not met.

United didn’t even try to hold the flight for me. They knew I had a tight connection and when I arrived at the gate less than 10 mins after final boarding the flight had already gone. The gate agent wasn’t even notified that I was on my way. She was told I wasn’t at the airport

Good quick flight on a small but comfortable plane. I'm 6'3 and had plenty of space.

The flight was delayed so we were dead tired, and after that the turbulence was horrible. I was very scared.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

Very good. Because of the delays with my previous flight, I missed my connection, but I was able to book another flight through the United app easily.

Was happy we finally got upgraded in 1st class. The seat getting old. The cushiness need some improvement.

Ineffective communication with United resulted in lost baggage. Their Baggage Tracing counter at MUC was shut down from 11:00-14:15 on my arrival. Undertrained, underinformed staff had me Running all over MUC to find someone to help me to no avail. Staff was rude, unhelpful, and unable to effectively use the systems they did have operational. They refused to contact United in any way or provide any accommodation or other resources while I waited for my luggage. This has destroyed my downstream itinerary. If they had even the slightest visibility I may have been able to reschedule/plan, but again, their staff provided nothing, and did nothing more than their website, which doesn’t even work on a standard phone browser. Miserable failure at all levels that weren’t associated with the operation of the aircraft.

Sat next to a one year old. She crawled all over the place and made me laugh.

Everything you need to know for your flight from Reagan-National to Portugal

Information on your arrival and departure airports