Find Cheap Flights from Portugal to Seattle

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 Seattle

(Round-trip)
Depart: Mon Jun 5 2017 Return: Mon Jun 12 2017 Trip spans 8 days
Finnair
Finnair
LIS
2:55a
SEA
2:42a
23h 47m
2 stops
SEA
3:15p
LIS
11:10a
19h 55m
1 stop
Depart: Wed Jun 7 2017 Return: Tue Jun 13 2017 Trip spans 7 days
British Airways
British Airways
LIS
3:25a
SEA
9:10p
17h 45m
1 stop
SEA
7:59p
LIS
10:15p
26h 16m
2 stops
Depart: Tue Jun 6 2017 Return: Mon Jun 12 2017 Trip spans 7 days
Finnair
Finnair
LIS
7:10a
SEA
9:10p
14h 00m
1 stop
SEA
3:15p
LIS
11:10a
19h 55m
1 stop
Depart: Thu Jun 8 2017 Return: Tue Jun 13 2017 Trip spans 6 days
British Airways
British Airways
LIS
7:10a
SEA
9:10p
14h 00m
1 stop
SEA
7:59p
LIS
10:15p
26h 16m
2 stops
Depart: Fri Jun 9 2017 Return: Mon Jun 12 2017 Trip spans 4 days
Finnair
Finnair
LIS
7:10a
SEA
9:10p
14h 00m
1 stop
SEA
3:15p
LIS
11:10a
19h 55m
1 stop
Depart: Sat Jun 3 2017 Return: Sun Jun 11 2017 Trip spans 9 days
$1068
Select
British Airways
British Airways
LIS
3:15a
SEA
9:10p
17h 55m
1 stop
SEA
3:15p
LIS
11:10a
19h 55m
1 stop
Depart: Sun Jun 4 2017 Return: Sun Jun 11 2017 Trip spans 8 days
$1070
Select
British Airways
British Airways
LIS
8:15a
SEA
1:01a
16h 46m
1 stop
SEA
3:15p
LIS
11:10a
19h 55m
1 stop
Depart: Thu Jun 15 2017 Return: Mon Aug 14 2017 Trip spans 61 days
$1128
Select
British Airways
British Airways
LIS
3:25a
SEA
9:10p
17h 45m
1 stop
SEA
8:10a
LIS
6:05a
21h 55m
2 stops
Depart: Tue Jul 4 2017 Return: Tue Jul 25 2017 Trip spans 22 days
$1142
Select
British Airways
British Airways
LIS
7:55a
SEA
1:01a
17h 06m
1 stop
SEA
4:05a
LIS
9:15p
17h 10m
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.

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
$860
Destination

Seattle
$860