Use SEA Spot Saver to book a security screening appointment in advance, reducing wait times for non-expedited passengers.
Most accurate provider | AranGrant 3 stars |
---|---|
Most trusted provider | AranGrant 3 stars |
Round-trip from | $624 (oojo) |
One-way from | $285 (oojo) |
Popular in | June |
Cheapest in | March |
Average price | $706 |
Good round-trip deal | $725 or less |
Good one-way deal | $486 or less |
Fly from
Fly to
Route
Depart
Return
Price
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Fri 8/15
11:30 pm-8:20 pm
1 stop12h 50m
London Heathrow
Sat 8/23
9:25 pm-11:25 am
1 stop22h 00m
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Wed 9/24
4:20 pm-9:20 am
1 stop33h 00m
London Heathrow
Wed 10/1
6:40 am-2:00 pm
1 stop15h 20m
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Wed 9/10
1:30 pm-6:50 am
Nonstop9h 20m
London Heathrow
Wed 9/24
9:50 am-11:35 am
Nonstop9h 45m
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Wed 9/3
7:20 am-6:30 am
1 stop15h 10m
London Heathrow
Wed 9/17
6:30 am-6:36 pm
2 stops20h 06m
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Tue 10/14
5:35 pm-11:20 am
Nonstop9h 45m
London Heathrow
Thu 10/23
5:25 pm-7:50 pm
Nonstop10h 25m
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Mon 9/8
7:20 am-10:00 am
2 stops18h 40m
London Heathrow
Tue 9/16
6:30 am-2:16 pm
2 stops15h 46m
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Tue 8/26
7:20 am-10:00 am
1 stop18h 40m
London Heathrow
Wed 9/10
8:40 am-6:36 pm
2 stops17h 56m
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Tue 9/23
10:00 am-11:50 am
2 stops17h 50m
London Heathrow
Wed 10/1
6:55 am-4:59 pm
1 stop18h 04m
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Wed 9/3
5:35 pm-11:20 am
Nonstop9h 45m
London Heathrow
Fri 9/19
6:30 am-11:45 am
1 stop13h 15m
SeattleLondon
SEA - LHR
SEALHR
Seattle/Tacoma Intl
Tue 9/23
1:45 pm-5:50 pm
2 stops20h 05m
London Heathrow
Mon 10/6
8:05 pm-6:36 pm
2 stops30h 31m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy1 star | Trust Score*2 stars | |
Price Accuracy- | Trust Score*1 star | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy1 star | Trust Score*3 stars |
Booking 32 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seattle to London Heathrow Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, November is the cheapest month in which you can book a flight from Seattle to London Heathrow Airport (average of $661). Flying from Seattle to London Heathrow Airport in June is currently the most expensive (average of $1,110). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from Seattle to London Heathrow Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 10% versus a flight in the morning.
Travelers seeking maximum savings on their Seattle to London Heathrow Airport flight should consider departing on Monday mornings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from SEA to LHR are scheduled on a Monday (22 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (16 on average).
In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.
If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).
Crew
Boarding
Comfort
Food
Overall
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Boarding
Comfort
Food
Overall
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Boarding
Comfort
Food
Overall
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Boarding
Comfort
Food
Overall
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Boarding
Comfort
Food
Overall
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Crew
Boarding
Comfort
Food
Overall
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$378 | Average$768 | FlexibilityNo cancel fee | On-time76% | |
Cheapest$504 | Average$673 | FlexibilityNo cancel fee | On-time76% | |
Cheapest$550 | Average$876 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$579 | Average$732 | FlexibilityNo cancel fee | On-time77% | |
Cheapest$583 | Average$819 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$584 | Average$789 | FlexibilityNo cancel fee | On-time77% | |
Cheapest$597 | Average$781 | FlexibilityNo cancel fee | On-time76% | |
Cheapest$598 | Average$850 | FlexibilityNo cancel fee | On-time75% | |
Cheapest$615 | Average$870 | FlexibilityNo cancel fee | On-time77% | |
Cheapest$616 | Average$869 | FlexibilityNo cancel fee | On-timeN/A |