SEARCH ONE AND DONE. - Compare hundreds of travel sites at once.
Choose where to book.
Find deals from over 400 airlines worldwide.

Cheap Flights from Seattle to London (SEA - LHR)

DepartReturn
1 adult
Note: some airlines charge for infants in laps.
The price shown for each flight will be the average for all passengers including any infants.
Choose Sites to Compare vs. KAYAK

Best fares from SEA to LHR (Found by others)

Sun Mon Tue Wed Thu Fri Sat
  1 $1236 2 $1870 3 $1215 4 $1164 5 $1264 6 $1202
7 $1236 8 $1090 9 $1211 10 $1063 11 $1139 12 $1120 13 $1192
14 $1213 15 $1154 16 $1183 17 $1075 18 $1099 19 $1257 20 $1187
21 $1236 22 $1095 23 $1146 24 $1059 25 $1134 26 $1146 27 $1188
28 $1236 29 $1236 30 $1205        
KAYAK searches hundreds of sites to find the best rate for your next flight from Seattle to London. Get the best flight deal for your London trip!
Here's how it works. Search KAYAK for a flight ticket from Seattle to London. Sort, filter and compare results on one web page. Then book your plane ticket direct on the airline or travel agent site of your choice!
Direct flights SEA to LHR on Delta
Flight # Depart SEA Arrive LHR Sun Mon Tue Wed Thu Fri Sat Valid Between
37 6:33 pm 12:05 pm Sep 2 - Oct 24