British Airways Flight BA857 Deals & Information (2025/2026)

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British Airways Flight 857 Route Deals From $45

The cheapest prices found with in the last 7 days for return flights were $112 and $45 for one-way flights to Heathrow for the period specified. Prices and availability are subject to change. Additional terms apply.

Thu, Nov 6 - Wed, Nov 12
PRG
Vaclav Havel
LHR
Heathrow
$112 Roundtrip, found 2 days ago
$112
Roundtrip
found 2 days ago
Select British Airways flight, departing Thu, Nov 6 from Vaclav Havel to Heathrow, returning Wed, Nov 12, priced at $112 found 2 days ago
Sun, Jan 11 - Mon, Jan 12
PRG
Vaclav Havel
LHR
Heathrow
$121 Roundtrip, found 18 hours ago
$121
Roundtrip
found 18 hours ago
Select British Airways flight, departing Sun, Jan 11 from Vaclav Havel to Heathrow, returning Mon, Jan 12, priced at $121 found 18 hours ago
Sun, Jan 11 - Mon, Jan 12
PRG
Vaclav Havel
LHR
Heathrow
$124 Roundtrip, found 18 hours ago
$124
Roundtrip
found 18 hours ago
Select British Airways flight, departing Sun, Jan 11 from Vaclav Havel to Heathrow, returning Mon, Jan 12, priced at $124 found 18 hours ago
Thu, Oct 2 - Sun, Oct 5
PRG
Vaclav Havel
LHR
Heathrow
$127 Roundtrip, found 4 days ago
$127
Roundtrip
found 4 days ago
Select British Airways flight, departing Thu, Oct 2 from Vaclav Havel to Heathrow, returning Sun, Oct 5, priced at $127 found 4 days ago
Thu, Sep 18 - Wed, Sep 24
PRG
Vaclav Havel
LHR
Heathrow
$128 Roundtrip, found 2 days ago
$128
Roundtrip
found 2 days ago
Select British Airways flight, departing Thu, Sep 18 from Vaclav Havel to Heathrow, returning Wed, Sep 24, priced at $128 found 2 days ago
Thu, Sep 11 - Wed, Sep 17
PRG
Vaclav Havel
LHR
Heathrow
$129 Roundtrip, found 2 days ago
$129
Roundtrip
found 2 days ago
Select British Airways flight, departing Thu, Sep 11 from Vaclav Havel to Heathrow, returning Wed, Sep 17, priced at $129 found 2 days ago
Thu, Sep 18 - Wed, Sep 24
PRG
Vaclav Havel
LHR
Heathrow
$131 Roundtrip, found 2 days ago
$131
Roundtrip
found 2 days ago
Select British Airways flight, departing Thu, Sep 18 from Vaclav Havel to Heathrow, returning Wed, Sep 24, priced at $131 found 2 days ago
Sun, Jan 11 - Mon, Jan 12
PRG
Vaclav Havel
LHR
Heathrow
$132 Roundtrip, found 18 hours ago
$132
Roundtrip
found 18 hours ago
Select British Airways flight, departing Sun, Jan 11 from Vaclav Havel to Heathrow, returning Mon, Jan 12, priced at $132 found 18 hours ago
Sun, Jan 11 - Mon, Jan 12
PRG
Vaclav Havel
LHR
Heathrow
$135 Roundtrip, found 18 hours ago
$135
Roundtrip
found 18 hours ago
Select British Airways flight, departing Sun, Jan 11 from Vaclav Havel to Heathrow, returning Mon, Jan 12, priced at $135 found 18 hours ago
Thu, Nov 6 - Wed, Nov 12
PRG
Vaclav Havel
LHR
Heathrow
$138 Roundtrip, found 2 days ago
$138
Roundtrip
found 2 days ago
Select British Airways flight, departing Thu, Nov 6 from Vaclav Havel to Heathrow, returning Wed, Nov 12, priced at $138 found 2 days ago

Frequently asked questions

What route does flight number BA857 take?
BA857 jets from Prague Airport (PRG-Vaclav Havel) to Heathrow Airport and flies direct. This service typically takes 2 hours.
What terminal does BA857 fly out of?
Travelers with seats booked on flight number BA857 from Václav Havel Airport Prague to Heathrow Airport normally jet out of Terminal 1.
What kind of plane is on flight number BA857?
The route for flight number BA857 is most commonly Prague Airport (PRG-Vaclav Havel) to Heathrow Airport (LHR), and the Airbus A320 is the type of aircraft you’re likely to be traveling on.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your BA857 flight with Travelocity, please visit our Customer Service Portal.