Find Deals on Flights from Washington to Portugal

Depart
Return
1 adult
Adults
18-64
Seniors
65+
Youths
12-17
Children
2-11
Seat Infants
under 2
Lap Infants
under 2
Students
under 26
The price shown for each flight will be the average for all passengers including any infants.
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Book cheap flights from Washington to Portugal

(Round-trip)
Depart: Sat Feb 18 2017 Return: Sat Mar 25 2017 Trip spans 35 days
British Airways
British Airways
IAD
5:30p
LIS
12:35p
19h 05m
1 stop
LIS
6:40a
IAD
3:45p
33h 05m
1 stop
Depart: Tue Feb 28 2017 Return: Mon Mar 13 2017 Trip spans 13 days
Major Airline
Major Airline
IAD
8:25a
LIS
3:20a
18h 55m
1 stop
LIS
11:15p
IAD
5:30p
18h 15m
1 stop
Depart: Mon Feb 6 2017 Return: Mon Feb 13 2017 Trip spans 8 days
TAP Portugal
TAP Portugal
DCA
9:17a
LIS
9:15p
11h 58m
1 stop
LIS
10:00a
DCA
10:04p
12h 04m
1 stop
Depart: Sun Apr 9 2017 Return: Sun Apr 16 2017 Trip spans 8 days
Turkish Airlines
Turkish Airlines
IAD
7:05p
OPO
2:20a
31h 15m
1 stop
OPO
11:35a
IAD
8:15p
32h 40m
1 stop
Depart: Sat Feb 25 2017 Return: Sat Mar 4 2017 Trip spans 8 days
British Airways
British Airways
IAD
5:30p
LIS
11:55p
30h 25m
1 stop
LIS
5:40a
IAD
3:45p
34h 05m
1 stop
Depart: Tue Mar 14 2017 Return: Sat Mar 25 2017 Trip spans 12 days
Major Airline
Major Airline
IAD
3:55p
LIS
6:20a
14h 25m
1 stop
LIS
2:40a
IAD
5:30p
14h 50m
1 stop
Depart: Sat Jan 7 2017 Return: Sat Jan 14 2017 Trip spans 8 days
Finnair
Finnair
IAD
1:25p
LIS
12:30p
23h 05m
1 stop
LIS
5:40a
IAD
2:20p
32h 40m
1 stop
Depart: Sat Dec 10 2016 Return: Fri Dec 16 2016 Trip spans 7 days
Royal Air Maroc
Royal Air Maroc
IAD
4:20p
LIS
2:50a
10h 30m
1 stop
LIS
11:10a
IAD
7:35p
32h 25m
1 stop
Depart: Thu May 25 2017 Return: Sun Jun 4 2017 Trip spans 11 days
Aer Lingus
Aer Lingus
IAD
1:15p
LIS
12:40p
23h 25m
1 stop
LIS
6:20p
IAD
4:45p
22h 25m
1 stop
Depart: Sun Mar 26 2017 Return: Sat Apr 1 2017 Trip spans 7 days
Major Airline
Major Airline
IAD
9:05a
LIS
2:10a
17h 05m
2 stops
LIS
8:10a
IAD
11:40a
27h 30m
2 stops
Depart: Sun Mar 19 2017 Return: Tue Mar 28 2017 Trip spans 10 days
British Airways
British Airways
IAD
7:30p
LIS
2:30p
19h 00m
1 stop
LIS
6:00p
IAD
4:45p
22h 45m
1 stop
Depart: Tue Dec 27 2016 Return: Mon Jan 9 2017 Trip spans 14 days
$1066
Select
United
United
DCA
9:56a
LIS
9:55p
11h 59m
1 stop
LIS
5:15a
DCA
8:30p
15h 15m
1 stop
Depart: Thu Feb 23 2017 Return: Tue Feb 28 2017 Trip spans 6 days
Major Airline
Major Airline
DCA
4:15a
LIS
7:30a
27h 15m
2 stops
LIS
8:55p
DCA
6:24p
21h 29m
2 stops
Depart: Fri Feb 24 2017 Return: Tue Mar 7 2017 Trip spans 12 days
British Airways
British Airways
IAD
5:30p
LIS
11:55p
30h 25m
1 stop
LIS
1:30p
IAD
3:45p
26h 15m
1 stop
Depart: Wed Feb 1 2017 Return: Sat Feb 11 2017 Trip spans 11 days
Major Airline
Major Airline
IAD
12:55p
LIS
12:20a
35h 25m
1 stop
LIS
1:30a
IAD
2:05p
36h 35m
1 stop
Depart: Thu Jun 1 2017 Return: Sat Jun 10 2017 Trip spans 10 days
$1285
Select
Iberia
Iberia
DCA
7:50a
OPO
10:35p
14h 45m
2 stops
OPO
4:05a
DCA
8:42p
16h 37m
2 stops
Depart: Sun Jan 22 2017 Return: Mon Jan 30 2017 Trip spans 9 days
British Airways
British Airways
IAD
12:30p
LIS
7:50a
19h 20m
1 stop
LIS
5:40a
IAD
8:30p
14h 50m
1 stop
Depart: Fri Mar 10 2017 Return: Tue Mar 14 2017 Trip spans 4 days
Major Airline
Major Airline
IAD
11:50p
LIS
11:25p
23h 35m
2 stops
LIS
9:05p
IAD
4:25p
19h 20m
2 stops
Depart: Mon Jan 30 2017 Return: Wed Feb 8 2017 Trip spans 10 days
TAP Portugal
TAP Portugal
IAD
3:45p
LIS
1:20a
9h 35m
1 stop
LIS
6:20a
IAD
6:05p
11h 45m
1 stop
Depart: Thu Feb 16 2017 Return: Mon Feb 20 2017 Trip spans 5 days
Major Airline
Major Airline
DCA
8:00p
LIS
5:35p
21h 35m
2 stops
LIS
8:05p
DCA
1:00p
16h 55m
2 stops
* Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

Here's why:

We’re not the seller.
At KAYAK we don’t set the prices, so it’s not possible for us to guarantee what other companies are selling.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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Airports
Origin

Washington
only $442
only $449
Destination

Porto
$778
Lisbon
$442