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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
$975
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
$1068
Finnair, Brussels, Alitalia, Austrian, Swiss, KLM, Turkish, British Airways, Tap Portugal, Air Canada, United, Delta, American, Air France, Lufthansa, Air Europa, US Airways, Iberia
$1134
Air Europa, Iberia, Air France, American, Delta, British Airways, Finnair, KLM, Alitalia
$1192
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
$1072
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, New Zealand, Turkish, KLM, Swiss, Air Berlin
$819
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
$970
Aer Lingus, US Airways, New Zealand, Turkish, Iberia, Swiss, Alitalia, Lufthansa, Air France, American, United, Finnair, Air Canada, British Airways, Delta, KLM
$777
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
$1054
Turkish, American, British Airways, Iberia
$1346
Finnair, British Airways, Delta, American, Air France, Iberia, Alitalia, Air Europa, KLM
$1291
Swiss, KLM, Iberia, Lufthansa, Condor, British Airways, Turkish, Air Canada, Austrian, Alitalia, Brussels, Finnair, Air France, Air Berlin, American, Delta, US Airways, Air Europa
$1147

Cheap International Flights to Porto - OPO

Flights
Airline
Lowest Price
Iberia, Lufthansa, American, United, British Airways, Swiss, KLM, Air Canada, Brussels, US Airways
CAD843
Alitalia, Lufthansa, American, United, Air Canada, British Airways, Brussels, KLM, Swiss, Iberia, US Airways
$1086
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
CAD800
Finnair, United, Air France, American, Delta, Turkish, US Airways, KLM, Lufthansa, Swiss, Iberia, Air Canada, Austrian, British Airways, Brussels
CAD812
Delta, American, Air France, Lufthansa, Iberia, Air Canada, United, US Airways, Brussels, Alitalia, Swiss, LOT, KLM, Turkish, British Airways
$1163
Turkish, Austrian, LOT, Iberia, Lufthansa, Air France, American, Delta, US Airways, Air Canada, British Airways, Finnair, Brussels, KLM, Swiss, Korean, United
CAD814
United, Lufthansa, Air France, Swiss, SAS, Turkish, Delta, Iberia, US Airways, American, Brussels, Alitalia, LOT, British Airways, Air Canada, KLM
$1224
Iberia, Air France, American, Finnair, KLM, British Airways, Delta
CAD882
Alitalia, US Airways, Turkish, Swiss, Brussels, British Airways, Air Canada, United, Delta, American, Air France, Lufthansa, Iberia, KLM
$1085
Swiss, US Airways, Turkish, KLM, Icelandair, LOT, Delta, American, United, Korean, Lufthansa, Iberia, Air Canada, Air Transat, British Airways, Finnair, Brussels, Austrian, Air France
CAD866
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
CAD515
Iberia, Turkish, British Airways, American
CAD979
US Airways, Turkish, KLM, LOT, Brussels, Austrian, Finnair, American, Delta, Iberia, Icelandair, Lufthansa, Air France, United, Air Canada, British Airways, Swiss
CAD802
Turkish, KLM, US Airways, Air France, Lufthansa, Iberia, Swiss, LOT, SAS, Brussels, American, Delta, United, Alitalia, Air Canada, British Airways
$970
American, Air France, Swiss, Lufthansa, Air Canada, Brussels, United, US Airways, Delta, Turkish, British Airways, KLM, LOT, Alitalia, Iberia
$1157
KLM, British Airways, Air Canada, Delta, United, American, Air France, Lufthansa
CAD903
Alitalia, SAS, KLM, US Airways, Iberia, Delta, LOT, Swiss, Turkish, Lufthansa, Air France, Brussels, American, United, Air Canada, British Airways, Singapore, New Zealand
$819
Air Canada, WestJet, Alaska, United, Delta, American, US Airways, Cathay
CAD557
Cheap Flights from Seattle to Porto, from $1143 Round trip from SEA to OPO