Flights from St. Louis to Alton Pancras

Cheapest flights from St. Louis

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Jul 29 - Wed, Aug 6

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$980 Roundtrip, found 5 days ago

$980

Roundtrip

found 5 days ago

Select United flight, departing Tue, Jul 29 from Lambert-St. Louis Intl. to Heathrow, returning Wed, Aug 6, priced at $980 found 5 days ago

Sat, Aug 2 - Tue, Aug 12

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$993 Roundtrip, found 5 days ago

$993

Roundtrip

found 5 days ago

Select Air Canada flight, departing Sat, Aug 2 from Lambert-St. Louis Intl. to Heathrow, returning Tue, Aug 12, priced at $993 found 5 days ago

Wed, Jul 30 - Tue, Aug 12

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$995 Roundtrip, found 5 days ago

$995

Roundtrip

found 5 days ago

Select Delta flight, departing Wed, Jul 30 from Lambert-St. Louis Intl. to Heathrow, returning Tue, Aug 12, priced at $995 found 5 days ago

Fri, Aug 1 - Wed, Aug 6

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,030 Roundtrip, found 5 days ago

$1,030

Roundtrip

found 5 days ago

Select Air Canada flight, departing Fri, Aug 1 from Lambert-St. Louis Intl. to Heathrow, returning Wed, Aug 6, priced at $1,030 found 5 days ago

Thu, Jul 31 - Thu, Aug 7

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,043 Roundtrip, found 5 days ago

$1,043

Roundtrip

found 5 days ago

Select Air Canada flight, departing Thu, Jul 31 from Lambert-St. Louis Intl. to Heathrow, returning Thu, Aug 7, priced at $1,043 found 5 days ago

Fri, Aug 1 - Thu, Aug 7

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,045 Roundtrip, found 5 days ago

$1,045

Roundtrip

found 5 days ago

Select Delta flight, departing Fri, Aug 1 from Lambert-St. Louis Intl. to Heathrow, returning Thu, Aug 7, priced at $1,045 found 5 days ago

Tue, Jul 29 - Sat, Aug 9

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,050 Roundtrip, found 5 days ago

$1,050

Roundtrip

found 5 days ago

Select United flight, departing Tue, Jul 29 from Lambert-St. Louis Intl. to Heathrow, returning Sat, Aug 9, priced at $1,050 found 5 days ago

Sun, Aug 3 - Sun, Aug 10

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,063 Roundtrip, found 5 days ago

$1,063

Roundtrip

found 5 days ago

Select United flight, departing Sun, Aug 3 from Lambert-St. Louis Intl. to Heathrow, returning Sun, Aug 10, priced at $1,063 found 5 days ago

Wed, Jul 30 - Mon, Aug 11

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,065 Roundtrip, found 5 days ago

$1,065

Roundtrip

found 5 days ago

Select Delta flight, departing Wed, Jul 30 from Lambert-St. Louis Intl. to Heathrow, returning Mon, Aug 11, priced at $1,065 found 5 days ago

Fri, Aug 1 - Sat, Aug 9

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,100 Roundtrip, found 5 days ago

$1,100

Roundtrip

found 5 days ago

Select Air Canada flight, departing Fri, Aug 1 from Lambert-St. Louis Intl. to Heathrow, returning Sat, Aug 9, priced at $1,100 found 5 days ago

Fri, Aug 1 - Sat, Aug 9

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,105 Roundtrip, found 5 days ago

$1,105

Roundtrip

found 5 days ago

Select United flight, departing Fri, Aug 1 from Lambert-St. Louis Intl. to Heathrow, returning Sat, Aug 9, priced at $1,105 found 5 days ago

Fri, Aug 1 - Sat, Aug 9

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,107 Roundtrip, found 5 days ago

$1,107

Roundtrip

found 5 days ago

Select Air Canada flight, departing Fri, Aug 1 from Lambert-St. Louis Intl. to Heathrow, returning Sat, Aug 9, priced at $1,107 found 5 days ago

Fri, Aug 1 - Sat, Aug 9

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,110 Roundtrip, found 5 days ago

$1,110

Roundtrip

found 5 days ago

Select Air Canada flight, departing Fri, Aug 1 from Lambert-St. Louis Intl. to Heathrow, returning Sat, Aug 9, priced at $1,110 found 5 days ago

Fri, Aug 1 - Sat, Aug 9

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,111 Roundtrip, found 5 days ago

$1,111

Roundtrip

found 5 days ago

Select United flight, departing Fri, Aug 1 from Lambert-St. Louis Intl. to Heathrow, returning Sat, Aug 9, priced at $1,111 found 5 days ago

Fri, Aug 1 - Sat, Aug 9

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,115 Roundtrip, found 5 days ago

$1,115

Roundtrip

found 5 days ago

Select British Airways flight, departing Fri, Aug 1 from Lambert-St. Louis Intl. to Heathrow, returning Sat, Aug 9, priced at $1,115 found 5 days ago

Fri, Aug 1 - Sat, Aug 9

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,115 Roundtrip, found 5 days ago

$1,115

Roundtrip

found 5 days ago

Select American Airlines flight, departing Fri, Aug 1 from Lambert-St. Louis Intl. to Heathrow, returning Sat, Aug 9, priced at $1,115 found 5 days ago

Fri, Aug 1 - Sat, Aug 9

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,272 Roundtrip, found 5 days ago

$1,272

Roundtrip

found 5 days ago

Select Lufthansa flight, departing Fri, Aug 1 from Lambert-St. Louis Intl. to Heathrow, returning Sat, Aug 9, priced at $1,272 found 5 days ago

Fri, Aug 1 - Sat, Aug 9

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,315 Roundtrip, found 5 days ago

$1,315

Roundtrip

found 5 days ago

Select Austrian Airlines flight, departing Fri, Aug 1 from Lambert-St. Louis Intl. to Heathrow, returning Sat, Aug 9, priced at $1,315 found 5 days ago

Fri, Aug 1 - Sat, Aug 9

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,365 Roundtrip, found 5 days ago

$1,365

Roundtrip

found 5 days ago

Select Virgin Atlantic flight, departing Fri, Aug 1 from Lambert-St. Louis Intl. to Heathrow, returning Sat, Aug 9, priced at $1,365 found 5 days ago

Fri, Aug 1 - Sat, Aug 9

STL

Lambert-St. Louis Intl.

LHR

Heathrow

$1,417 Roundtrip, found 5 days ago

$1,417

Roundtrip

found 5 days ago

Select KLM flight, departing Fri, Aug 1 from Lambert-St. Louis Intl. to Heathrow, returning Sat, Aug 9, priced at $1,417 found 5 days ago