How to get from St Louis to London: connecting flights, about 12h total

Flights from St Louis to London

Pick a departure date to see flights and seller prices

We search agencies and airlines for your day: nonstop and connecting flights, baggage, departure and arrival times.

Best fares from St Louis to London

Lowest one-way prices found by recent searches for the next 120 days; press a card to search that date

Cheapest one-way $386 6 January 2027, with a connection Cheapest month January 2027 tickets from $386

Where to connect

Options with one connection, fastest first

fastest, via Pittsburgh: 12h
two tickets, via Boston: $408
connection options: 5
straight-line distance: 4,200 mi (6,760 km)

fastest

Via Pittsburgh

12h

with the connection

St Louis to Pittsburgh flight 1h 35m

Connection of about 3h

Pittsburgh to London flight 7h 25m

Via Detroit

12h

with the connection

St Louis to Detroit flight 1h 30m

Connection of about 3h

Detroit to London flight 7h 30m

Via Toronto

Canada

12h 8m

with the connection

St Louis to Toronto flight 1h 58m

Connection of about 3h

Toronto to London flight 7h 10m

two ticketsfrom $1,629

Via Philadelphia

12h 16m

with the connection

St Louis to Philadelphia flight 2h 11m

Connection of about 3h

Philadelphia to London flight 7h 5m

two ticketsfrom $1,547

Via Boston

12h 20m

with the connection

St Louis to Boston flight 2h 35m

Connection of about 3h

Boston to London flight 6h 45m

two ticketsfrom $408

One ticket or two

How the options are calculated and what to keep in mind at the connection

Flight times come from the nonstop schedule (estimated from the distance where there is no schedule), with 3h allowed for the connection. The price of an option is the sum of the lowest known fares for each leg; their dates may not match, so treat it as a guide. The search shows tickets for your dates, including connections on a single ticket.

When to visit London

Weather by month

Best time to visit: May, June, July, August and September, +18° to +23° by day. In November it is +11° by day and +6° at night, with 11 rainy days.

Jan

+7° +2° 12 days

Feb

+10° +3° 11 days

Mar

+12° +4° 12 days

Apr

+14° +5° 8 days

May

+18° +9° 13 days

Jun

+22° +12° 8 days

Jul

+23° +14° 13 days

Aug

+23° +14° 7 days

Sep

+20° +12° 12 days

Oct

+16° +10° 13 days

Nov

+11° +6° 11 days

Dec

+9° +5° 12 days

Daytime and night temperatures in °C, rainy days. Months with the most comfortable weather are in green. Long-term averages.

Nearest nonstop flights

The closest you can get without a connection

From St Louis to cities closest to London

St Louis to Frankfurt Frankfurt: 393 mi (632 km) from London, flight 8h 50m St Louis to Montreal Montreal: 3,244 mi (5,220 km) from London, flight 4h 4m from $483 St Louis to Boston Boston: 3,271 mi (5,264 km) from London, flight 2h 35m from $165 St Louis to Syracuse Syracuse: 3,447 mi (5,548 km) from London, flight 7h 20m St Louis to New York New York: 3,461 mi (5,570 km) from London, flight 2h 26m from $96 St Louis to Philadelphia Philadelphia: 3,542 mi (5,700 km) from London, flight 2h 11m from $187

To London from cities closest to St Louis

Chicago to London Chicago: 262 mi (422 km) from St Louis, flight 8h from $300 Detroit to London Detroit: 455 mi (732 km) from St Louis, flight 7h 30m Minneapolis to London Minneapolis: 467 mi (751 km) from St Louis, flight 7h 55m Atlanta to London Atlanta: 467 mi (752 km) from St Louis, flight 8h 10m from $327 Dallas to London Dallas: 548 mi (882 km) from St Louis, flight 9h 5m from $348 Pittsburgh to London Pittsburgh: 557 mi (897 km) from St Louis, flight 7h 25m

Frequently asked questions

Is there a nonstop flight from St Louis to London?

There are no nonstop flights in the schedule. You will need a connection, the fastest is via Pittsburgh.

What is the fastest way to fly from St Louis to London?

Via Pittsburgh: 1h 35m to the connection, 7h 25m after it, about 12h in total with 3h for the connection.

How much does a flight from St Louis to London with a connection cost?

Two nonstop tickets via Boston from $408. This is the sum of the lowest known prices for each leg, and their dates may not match.

Which cities can you connect in between St Louis and London?

Pittsburgh (12h total), Detroit (12h total), Toronto (12h 8m total), Philadelphia (12h 16m total) and Boston (12h 20m total).

How far is London from St Louis?

4,200 mi (6,760 km) in a straight line between the cities.

How much time should I allow for the connection?

The options allow 3h. On a single ticket the carrier is responsible for the connection; on separate tickets you set the margin yourself, allowing time to collect and re-check your bags.