Find Cheap Flights from Portugal to Washington Dulles Intl

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.
Compare vs. KAYAK all | none
Browse Origins:
Browse Destinations:

Dates flexible? Here are the best fares found in the past 48 hours...

Book cheap flights from Portugal to Washington Dulles Intl

(Round-trip)
Depart: Wed Oct 4 2017 Return: Mon Oct 9 2017 Trip spans 6 days
Air France
Air France
LIS
1:40a
IAD
7:45p
18h 05m
1 stop
IAD
5:05p
LIS
1:20p
20h 15m
1 stop
Depart: Mon Oct 2 2017 Return: Mon Oct 9 2017 Trip spans 8 days
Lufthansa
Lufthansa
LIS
2:00a
IAD
8:00p
18h 00m
1 stop
IAD
1:30p
LIS
12:30p
23h 00m
1 stop
Depart: Sun Oct 8 2017 Return: Wed Oct 11 2017 Trip spans 4 days
Turkish Airlines
Turkish Airlines
LIS
7:30a
IAD
8:10p
36h 40m
1 stop
IAD
7:00p
LIS
5:50a
34h 50m
1 stop
Depart: Thu Jun 22 2017 Return: Sun Jun 25 2017 Trip spans 4 days
KLM
KLM
LIS
8:00a
IAD
4:25p
32h 25m
1 stop
IAD
1:40p
LIS
10:55a
21h 15m
1 stop
Depart: Wed Aug 23 2017 Return: Wed Aug 30 2017 Trip spans 8 days
Major Airline
Major Airline
LIS
7:45a
IAD
4:10p
32h 25m
1 stop
IAD
3:00p
LIS
1:50a
34h 50m
1 stop
Depart: Tue Jun 13 2017 Return: Tue Jun 27 2017 Trip spans 15 days
British Airways
British Airways
LIS
3:25a
IAD
9:20p
17h 55m
1 stop
IAD
6:20p
LIS
1:55p
19h 35m
1 stop
Depart: Mon Aug 21 2017 Return: Mon Aug 28 2017 Trip spans 8 days
Brussels Airlines
Brussels Airlines
LIS
3:45p
IAD
1:55p
22h 10m
1 stop
IAD
1:40p
LIS
2:50a
13h 10m
1 stop
Depart: Thu Oct 5 2017 Return: Mon Oct 9 2017 Trip spans 5 days
Air France
Air France
LIS
1:40a
IAD
4:55p
15h 15m
1 stop
IAD
5:05p
LIS
1:20p
20h 15m
1 stop
Depart: Tue Oct 3 2017 Return: Mon Oct 9 2017 Trip spans 7 days
Lufthansa
Lufthansa
LIS
2:00a
IAD
8:00p
18h 00m
1 stop
IAD
1:30p
LIS
12:30p
23h 00m
1 stop
Depart: Fri Oct 6 2017 Return: Mon Oct 9 2017 Trip spans 4 days
Air France
Air France
LIS
1:40a
IAD
7:45p
18h 05m
1 stop
IAD
5:05p
LIS
1:20p
20h 15m
1 stop
Depart: Sat Oct 7 2017 Return: Mon Oct 9 2017 Trip spans 3 days
Lufthansa
Lufthansa
LIS
2:00a
IAD
8:00p
18h 00m
1 stop
IAD
1:30p
LIS
12:30p
23h 00m
1 stop
Depart: Wed Aug 16 2017 Return: Mon Aug 21 2017 Trip spans 6 days
Major Airline
Major Airline
LIS
3:30a
IAD
4:10p
36h 40m
nonstop
IAD
3:00p
LIS
9:30p
30h 30m
nonstop
Depart: Sun Sep 17 2017 Return: Thu Sep 21 2017 Trip spans 5 days
Turkish Airlines
Turkish Airlines
LIS
7:30a
IAD
8:10p
36h 40m
1 stop
IAD
7:00p
LIS
1:30a
30h 30m
1 stop
Depart: Sat Sep 23 2017 Return: Sat Sep 30 2017 Trip spans 8 days
Air France
Air France
LIS
11:50a
IAD
4:50p
29h 00m
1 stop
IAD
2:15p
LIS
5:55a
15h 40m
1 stop
Depart: Sat Aug 26 2017 Return: Mon Sep 4 2017 Trip spans 10 days
Brussels Airlines
Brussels Airlines
LIS
3:45p
IAD
1:55p
22h 10m
1 stop
IAD
1:50p
LIS
2:50a
13h 00m
1 stop
Depart: Fri May 26 2017 Return: Fri Jun 2 2017 Trip spans 8 days
KLM
KLM
LIS
8:00a
IAD
11:08p
15h 08m
1 stop
IAD
5:50a
LIS
1:30a
19h 40m
1 stop
Depart: Thu Aug 24 2017 Return: Mon Aug 28 2017 Trip spans 5 days
Air France
Air France
LIS
2:35p
IAD
4:50p
26h 15m
1 stop
IAD
5:05p
LIS
5:55a
12h 50m
1 stop
Depart: Fri Aug 25 2017 Return: Mon Aug 28 2017 Trip spans 4 days
Air France
Air France
LIS
1:40a
IAD
7:45p
18h 05m
1 stop
IAD
2:15p
LIS
5:55a
15h 40m
1 stop
Depart: Tue Jul 18 2017 Return: Mon Jul 31 2017 Trip spans 14 days
Lufthansa
Lufthansa
LIS
3:15a
IAD
4:55p
13h 40m
1 stop
IAD
6:20p
LIS
1:35a
7h 15m
nonstop
Depart: Thu Jul 20 2017 Return: Mon Jul 31 2017 Trip spans 12 days
Lufthansa
Lufthansa
LIS
8:10a
IAD
8:55p
12h 45m
1 stop
IAD
6:20p
LIS
1:35a
7h 15m
nonstop
* 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.

We compile tonnes of data for you
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,
please send us an email and someone from our team will get back to you promptly.

Airports
Origin

Lisbon
$584
Destination

Washington
$584
Airlines Airline reviews

2 travelers who booked a flight from Lisbon to Washington rated their chosen airlines with an average of 8.0.

Overall
8.0
Boarding
8.0
Crew
8.0
Comfort
8.0
Food
8.0
Entertainment
8.0