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Cheap Flights from Seattle to Porto - SEA to OPO

Did You Know?

US Airways has 490 connecting flights between Seattle, WA and Porto.
457,731 seats are available per week to fly from Seattle, WA to Porto.
You must make at least one connection to fly from Seattle, WA to Porto.
There are 8350 flights from Seattle, WA to Porto per week.

Cheap International Flights from Seattle - SEA

Flights
Airline
Lowest Price
Air Europa, Korean, British Airways, Finnair, Brussels, Tap Portugal, SAS, KLM, US Airways, Icelandair, Turkish, Swiss, Delta, LOT, Alitalia, Air Canada, Austrian, Lufthansa, Air France, Air Berlin, American, Iberia, United
$992
Swiss, Turkish, KLM, US Airways, Delta, LOT, Austrian, American, Icelandair, Korean, Air Europa, Iberia, Lufthansa, Air France, Air Canada, British Airways, Finnair, Brussels, Alitalia, United
$1020
Finnair, Brussels, Alitalia, Austrian, Swiss, KLM, Turkish, British Airways, Tap Portugal, Air Canada, United, Delta, American, Air France, Lufthansa, Air Europa, US Airways, Iberia
$1014
Air Europa, Iberia, Air France, American, Delta, British Airways, Finnair, KLM, Alitalia
$1113
LOT, Air Berlin, Swiss, KLM, Turkish, US Airways, Austrian, Alitalia, Air France, Lufthansa, Iberia, Air Europa, Icelandair, American, Delta, United, British Airways, Finnair, Brussels, Air Canada
$1029
Icelandair, Austrian, SAS, Alitalia, Brussels, Finnair, British Airways, Singapore, Air Canada, American, Lufthansa, Air France, United, LOT, Korean, Condor, Iberia, US Airways, Delta, Tap Portugal, Air New Zealand, Turkish, KLM, Swiss, Air Berlin
$845
Air France, Alitalia, SAS, Austrian, KLM, US Airways, Icelandair, Korean, Air Europa, Iberia, Tap Portugal, Turkish, Swiss, Brussels, LOT, Finnair, British Airways, Air Canada, United, American, Lufthansa, Delta
$991
Aer Lingus, US Airways, Air New Zealand, Turkish, Iberia, Swiss, Alitalia, Lufthansa, Air France, American, United, Finnair, Air Canada, British Airways, Delta, KLM
$808
LOT, KLM, Delta, US Airways, Icelandair, Korean, Iberia, Air Europa, SAS, Austrian, Brussels, Lufthansa, Air France, Air Berlin, American, Air Canada, British Airways, Finnair, Alitalia, Swiss, Turkish, United
$1012
Turkish, American, British Airways, Iberia
$1029
Finnair, British Airways, Delta, American, Air France, Iberia, Alitalia, Air Europa, KLM
$1059
Swiss, KLM, Iberia, Lufthansa, Condor, British Airways, Turkish, Air Canada, Austrian, Alitalia, Brussels, Finnair, Air France, Air Berlin, American, Delta, US Airways, Air Europa
$1020

Cheap International Flights to Porto - OPO

Flights
Airline
Lowest Price
Iberia, Lufthansa, American, United, British Airways, Swiss, KLM, Air Canada, Brussels, US Airways
CAD908
Alitalia, Lufthansa, American, United, Air Canada, British Airways, Brussels, KLM, Swiss, Iberia, US Airways
$1094
Finnair, British Airways, Delta, Air Canada, Air Transat, KLM, Brussels, Austrian, LOT, Swiss, US Airways, Jet Airways, Turkish, United, Icelandair, American, Air France, Lufthansa, Iberia, Korean
CAD700
Finnair, United, Air France, American, Delta, Turkish, US Airways, KLM, Lufthansa, Swiss, Iberia, Air Canada, Austrian, British Airways, Brussels
CAD858
Delta, American, Air France, Lufthansa, Iberia, Air Canada, United, US Airways, Brussels, Alitalia, Swiss, LOT, KLM, Turkish, British Airways
$1034
Turkish, Austrian, LOT, Iberia, Lufthansa, Air France, American, Delta, US Airways, Air Canada, British Airways, Finnair, Brussels, KLM, Swiss, Korean, United
CAD853
United, Lufthansa, Air France, Swiss, SAS, Turkish, Delta, Iberia, US Airways, American, Brussels, Alitalia, LOT, British Airways, Air Canada, KLM
$1054
Iberia, Air France, American, Finnair, KLM, British Airways, Delta
CAD983
Alitalia, US Airways, Turkish, Swiss, Brussels, British Airways, Air Canada, United, Delta, American, Air France, Lufthansa, Iberia, KLM
$1120
Swiss, US Airways, Turkish, KLM, Icelandair, LOT, Delta, American, United, Korean, Lufthansa, Iberia, Air Canada, Air Transat, British Airways, Finnair, Brussels, Austrian, Air France
CAD862
British Airways, Air Transat, United, Air Canada, Delta, American, Air France, Condor, Iberia, Korean, Icelandair, Finnair, Brussels, US Airways, Turkish, Lufthansa, KLM, Swiss, LOT, Austrian
CAD574
Iberia, Turkish, British Airways, American
CAD961
US Airways, Turkish, KLM, LOT, Brussels, Austrian, Finnair, American, Delta, Iberia, Icelandair, Lufthansa, Air France, United, Air Canada, British Airways, Swiss
CAD887
Turkish, KLM, US Airways, Air France, Lufthansa, Iberia, Swiss, LOT, SAS, Brussels, American, Delta, United, Alitalia, Air Canada, British Airways
$998
American, Air France, Swiss, Lufthansa, Air Canada, Brussels, United, US Airways, Delta, Turkish, British Airways, KLM, LOT, Alitalia, Iberia
$1029
KLM, British Airways, Air Canada, Delta, United, American, Air France, Lufthansa
CAD979
Alitalia, SAS, KLM, US Airways, Iberia, Delta, LOT, Swiss, Turkish, Lufthansa, Air France, Brussels, American, United, Air Canada, British Airways, Singapore, Air New Zealand
$845
Air Canada, WestJet, Alaska, United, Delta, American, US Airways, Cathay
CAD614
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Cheap Flights from Seattle to Porto, from $1143 Round trip from SEA to OPO