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
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: Mon May 8 2017 Return: Fri May 12 2017 Trip spans 5 days
Major Airline
Major Airline
IAD
7:05a
PDL
6:00p
10h 55m
1 stop
PDL
9:00a
IAD
3:44a
18h 44m
1 stop
Depart: Thu May 11 2017 Return: Mon May 22 2017 Trip spans 12 days
Turkish Airlines
Turkish Airlines
IAD
7:00p
LIS
5:50a
34h 50m
1 stop
LIS
7:30a
IAD
8:10p
36h 40m
1 stop
Depart: Tue May 2 2017 Return: Thu May 11 2017 Trip spans 10 days
British Airways
British Airways
IAD
1:15p
LIS
12:40p
23h 25m
1 stop
LIS
2:50p
IAD
1:45p
22h 55m
1 stop
Depart: Fri Jun 9 2017 Return: Sun Jun 11 2017 Trip spans 3 days
American Airlines
American Airlines
DCA
1:45p
LIS
2:10p
24h 25m
2 stops
LIS
3:45a
DCA
12:39a
20h 54m
2 stops
Depart: Sat Sep 23 2017 Return: Tue Oct 3 2017 Trip spans 11 days
Aer Lingus
Aer Lingus
IAD
1:15p
LIS
1:15a
12h 00m
1 stop
LIS
6:20p
IAD
4:35p
22h 15m
1 stop
Depart: Sat May 27 2017 Return: Mon May 29 2017 Trip spans 3 days
Royal Air Maroc
Royal Air Maroc
IAD
6:00p
LIS
7:10a
13h 10m
1 stop
LIS
1:10p
IAD
9:15p
32h 05m
1 stop
Depart: Wed Sep 6 2017 Return: Sat Sep 16 2017 Trip spans 11 days
$1131
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Lufthansa
Lufthansa
IAD
6:00p
LIS
1:15a
7h 15m
nonstop
LIS
8:15a
IAD
4:30p
8h 15m
nonstop
Depart: Sat Sep 9 2017 Return: Fri Sep 22 2017 Trip spans 14 days
Major Airline
Major Airline
IAD
2:20p
LIS
5:05a
14h 45m
1 stop
LIS
3:10a
IAD
5:20p
14h 10m
1 stop
Depart: Tue Aug 22 2017 Return: Mon Aug 28 2017 Trip spans 7 days
British Airways
British Airways
IAD
1:15p
LIS
12:40p
23h 25m
1 stop
LIS
2:50p
IAD
9:20p
30h 30m
1 stop
Depart: Mon Apr 24 2017 Return: Wed May 3 2017 Trip spans 10 days
Turkish Airlines
Turkish Airlines
IAD
7:00p
OPO
2:20a
31h 20m
1 stop
OPO
8:15a
IAD
8:10p
35h 55m
1 stop
Depart: Tue Sep 26 2017 Return: Tue Oct 3 2017 Trip spans 8 days
Aer Lingus
Aer Lingus
IAD
1:15p
LIS
1:35a
12h 20m
1 stop
LIS
6:20p
IAD
4:35p
22h 15m
1 stop
Depart: Sat May 6 2017 Return: Wed May 10 2017 Trip spans 5 days
Major Airline
Major Airline
DCA
4:50a
LIS
12:35a
19h 45m
2 stops
LIS
4:50a
DCA
6:44p
13h 54m
2 stops
Depart: Wed Aug 23 2017 Return: Tue Aug 29 2017 Trip spans 7 days
British Airways
British Airways
IAD
1:15p
LIS
12:40p
23h 25m
1 stop
LIS
2:50p
IAD
9:20p
30h 30m
1 stop
Depart: Thu May 25 2017 Return: Wed May 31 2017 Trip spans 7 days
Turkish Airlines
Turkish Airlines
IAD
7:00p
OPO
5:35a
34h 35m
1 stop
OPO
8:15a
IAD
8:10p
35h 55m
1 stop
Depart: Wed Sep 20 2017 Return: Tue Oct 3 2017 Trip spans 14 days
Aer Lingus
Aer Lingus
IAD
1:15p
LIS
12:40p
23h 25m
1 stop
LIS
6:20p
IAD
4:35p
22h 15m
1 stop
Depart: Fri Sep 1 2017 Return: Sat Sep 9 2017 Trip spans 9 days
Major Airline
Major Airline
DCA
10:30p
PDL
6:00p
19h 30m
1 stop
PDL
9:00a
DCA
4:37a
19h 37m
1 stop
Depart: Sun Apr 16 2017 Return: Mon Apr 24 2017 Trip spans 9 days
Turkish Airlines
Turkish Airlines
IAD
7:00p
LIS
5:50a
34h 50m
1 stop
LIS
11:45a
IAD
8:10p
32h 25m
1 stop
Depart: Sun Sep 24 2017 Return: Tue Oct 3 2017 Trip spans 10 days
Aer Lingus
Aer Lingus
IAD
1:15p
LIS
12:40p
23h 25m
1 stop
LIS
6:20p
IAD
4:35p
22h 15m
1 stop
Depart: Sat Aug 26 2017 Return: Sun Sep 3 2017 Trip spans 9 days
Major Airline
Major Airline
IAD
6:45a
LIS
1:55a
19h 10m
2 stops
LIS
7:35a
IAD
9:50a
26h 15m
2 stops
Depart: Fri Sep 22 2017 Return: Sun Oct 8 2017 Trip spans 17 days
British Airways
British Airways
IAD
1:15p
LIS
1:35a
12h 20m
1 stop
LIS
2:50p
IAD
1:45p
22h 55m
1 stop
* 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 $649
only $728
Destination

Porto
$770
Lisbon
$727
Ponta Delgada (Açores)
$649