
Most accurate provider | Gotogate 3 stars |
|---|---|
Most trusted provider | Gotogate 3 stars |
Round-trip from | $573 (Kiwi.com) |
One-way from | $220 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $740 |
Good round-trip deal | $597 or less |
Good one-way deal | $418 or less |
Fly from
Fly to
Route
Depart
Return
Price
St. LouisLondon
STL - LGW
STLLGW
Lambert-St Louis
Mon 12/8
3:30 pm-10:00 am
1 stop12h 30m
London Gatwick
Thu 1/8
2:00 pm-7:50 am
1 stop23h 50m
St. LouisLondon
STL - LGW
STLLGW
Lambert-St Louis
Mon 12/8
9:54 am-10:00 am
1 stop18h 06m
London Gatwick
Sat 1/10
2:00 pm-10:33 pm
1 stop14h 33m
St. LouisLondon
STL - LGW
STLLGW
Lambert-St Louis
Thu 12/11
3:30 pm-10:00 am
1 stop12h 30m
London Gatwick
Thu 1/8
2:00 pm-7:50 am
1 stop23h 50m
St. LouisLondon
STL - LGW
STLLGW
Lambert-St Louis
Sat 12/13
3:30 pm-10:05 am
1 stop12h 35m
London Gatwick
Sat 1/10
2:00 pm-10:33 pm
1 stop14h 33m
St. LouisLondon
STL - LGW
STLLGW
Lambert-St Louis
Thu 12/11
12:04 pm-10:00 am
2 stops15h 56m
London Gatwick
Sat 1/10
2:00 pm-10:33 pm
1 stop14h 33m
St. LouisLondon
STL - LGW
STLLGW
Lambert-St Louis
Fri 11/14
3:50 pm-6:30 pm
2 stops20h 40m
London Gatwick
Tue 11/18
7:55 pm-1:55 pm
2 stops24h 00m
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
Tue 11/11
5:24 pm-11:15 am
1 stop11h 51m
London Heathrow
Tue 11/18
6:50 am-3:47 pm
2 stops14h 57m
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
Mon 11/24
10:00 am-7:10 am
2 stops15h 10m
London Heathrow
Wed 12/3
6:50 am-3:40 pm
2 stops14h 50m
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
Wed 11/19
6:30 am-7:10 am
2 stops18h 40m
London Heathrow
Wed 11/26
6:50 am-3:46 pm
2 stops14h 56m
St. LouisLondon
STL - LHR
STLLHR
Lambert-St Louis
Wed 11/19
11:37 am-6:20 am
1 stop12h 43m
London Heathrow
Fri 12/5
6:30 am-1:55 pm
1 stop13h 25m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star |
The best time to book flights from St. Louis to London is 25 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Currently, September is the cheapest month in which you can book a flight from St. Louis to London (average of $530). Flying from St. Louis to London in June is currently the most expensive (average of $1,001). 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.
It’s optimal to fly from St. Louis to London in the evening. By choosing this option you can save up to 33% on the cost of your flight, compared to a flight at noon.
Travelers seeking maximum savings on their St. Louis to London flight should consider departing on Thursday evenings when fares are most often at their lowest. Friday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.
Chicago (ORD) – chosen by Cheapflights users on 55% of 1-stop itineraries from St. Louis to London on Cheapflights.
Chicago (ORD) is the most affordable 1-stop option, with an average round-trip price of $782.
Flights via Chicago (ORD) have the shortest average one-way travel time for 1-stop routes: 9h 55m.
Flights via Chicago (ORD) offer the fastest connection on this route, with an average layover time of 1h 16m.
Overall
Entertainment
Boarding
Food
Crew
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
Overall
Entertainment
Boarding
Food
Crew
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
Overall
Entertainment
Boarding
Food
Crew
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
Overall
Entertainment
Boarding
Food
Crew
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
Overall
Entertainment
Boarding
Food
Crew
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
Overall
Entertainment
Boarding
Food
Crew
Comfort
Reviews
Sebrena,Oct 2025
IAH - RSW
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$529 | Average$745 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$573 | Average$929 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$580 | Average$925 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$580 | Average$889 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$580 | Average$884 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$597 | Average$960 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$602 | Average$1,102 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$637 | Average$880 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$670 | Average$888 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$747 | Average$947 | FlexibilityNo cancel fee | On-time72% |