£125 Cheap Flights from Ostrava (OSR) to London (LHR)

View £125 flight on Wed, 1 Jul 2026Opens in a new window

Flight 1

Popular airlines from Ostrava (OSR-Leos Janacek) to Heathrow Airport (LHR)

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Cheap Flights from Ostrava (OSR) to London (LHR)

Prices were available within the past 7 days and start at £125 for one-way flights and £203 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

LOT-Polish Airlines
Wed, 17 Jun - Mon, 31 Aug
OSR
Ostrava
LHR
London
£203 Return, found 6 days ago
£203
Return
found 6 days ago
Select LOT-Polish Airlines flight, departing Wed, 17 Jun from Ostrava to London, returning Mon, 31 Aug, priced at £203 found 6 days ago
LOT-Polish Airlines
Wed, 17 Jun - Wed, 24 Jun
OSR
Ostrava
LHR
London
£216 Return, found 5 days ago
£216
Return
found 5 days ago
Select LOT-Polish Airlines flight, departing Wed, 17 Jun from Ostrava to London, returning Wed, 24 Jun, priced at £216 found 5 days ago
LOT-Polish Airlines
Wed, 17 Jun - Sun, 21 Jun
OSR
Ostrava
LHR
London
£217 Return, found 4 days ago
£217
Return
found 4 days ago
Select LOT-Polish Airlines flight, departing Wed, 17 Jun from Ostrava to London, returning Sun, 21 Jun, priced at £217 found 4 days ago
LOT-Polish Airlines
Wed, 17 Jun - Wed, 24 Jun
OSR
Ostrava
LHR
London
£231 Return, found 5 days ago
£231
Return
found 5 days ago
Select LOT-Polish Airlines flight, departing Wed, 17 Jun from Ostrava to London, returning Wed, 24 Jun, priced at £231 found 5 days ago
LOT-Polish Airlines
Sun, 5 Jul - Mon, 6 Jul
OSR
Ostrava
LHR
London
£315 Return, found 3 days ago
£315
Return
found 3 days ago
Select LOT-Polish Airlines flight, departing Sun, 5 Jul from Ostrava to London, returning Mon, 6 Jul, priced at £315 found 3 days ago
LOT-Polish Airlines
Sun, 5 Jul - Mon, 6 Jul
OSR
Ostrava
LHR
London
£370 Return, found 3 days ago
£370
Return
found 3 days ago
Select LOT-Polish Airlines flight, departing Sun, 5 Jul from Ostrava to London, returning Mon, 6 Jul, priced at £370 found 3 days ago
LOT-Polish Airlines
Sun, 5 Jul - Mon, 6 Jul
OSR
Ostrava
LHR
London
£419 Return, found 3 days ago
£419
Return
found 3 days ago
Select LOT-Polish Airlines flight, departing Sun, 5 Jul from Ostrava to London, returning Mon, 6 Jul, priced at £419 found 3 days ago
LOT-Polish Airlines
Wed, 17 Jun - Wed, 24 Jun
OSR
Ostrava
LHR
London
£454 Return, found 5 days ago
£454
Return
found 5 days ago
Select LOT-Polish Airlines flight, departing Wed, 17 Jun from Ostrava to London, returning Wed, 24 Jun, priced at £454 found 5 days ago
LOT-Polish Airlines
Wed, 17 Jun - Wed, 24 Jun
OSR
Ostrava
LHR
London
£466 Return, found 5 days ago
£466
Return
found 5 days ago
Select LOT-Polish Airlines flight, departing Wed, 17 Jun from Ostrava to London, returning Wed, 24 Jun, priced at £466 found 5 days ago
TAP Portugal
Wed, 17 Jun - Wed, 24 Jun
OSR
Ostrava
LHR
London
£679 Return, found 5 days ago
£679
Return
found 5 days ago
Select TAP Portugal flight, departing Wed, 17 Jun from Ostrava to London, returning Wed, 24 Jun, priced at £679 found 5 days ago

Frequently asked questions

How do I find cheap flights from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow)?
To find a cheap flight from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow)?
There are approximately 1 connecting flight per day from Ostrava (OSR-Leos Janacek) (OSR) to London (LHR-Heathrow) (LHR). A common connection point includes Frederic Chopin (WAW).
What is the earliest flight from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow)?
The earliest flight from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow) typically departs at approximately 5:20 AM local time. This service is operated by LOT Polish Airlines and KLM. This is a seasonal service, active only in February. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow)?
You'll typically find the most flights from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow) on a Monday, with around 1 flight available. This gives you a good selection for your travel plans. The main airline on this route is LOT Polish Airlines.
What are the most popular departure times for flights from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow)?
The most popular departure times for flights from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow) are in the early morning, from 3am to 6am. About 100% of passengers prefer this time. Many major carriers, including LOT Polish Airlines, KLM and Brussels Airlines, offer flights during this window. This timing works well because it allows you to start your journey very early and arrive in London with plenty of time to spare for your day.
How long does it take to fly from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow)?
Flights from OSR to LHR with one stop typically take around 8 hours 20 minutes, covering approximately 822 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow)?
Select the "Business class" and "First class" filters when looking for OSR to LHR flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow) flight with Expedia?
It's easy to earn miles on a Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for London from Leos Janacek (OSR)?
When traveling from Leos Janacek (OSR) to London, you can fly into Heathrow (LHR) and Stansted (STN). Some flights may connect through major hubs like Frederic Chopin (WAW) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow) at the last minute?
Typically, booking a last minute flight from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow) flight and hotel package?
Securing a Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow)?
If you booked your Ostrava (OSR-Leos Janacek) to London (LHR-Heathrow) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Leos Janacek
Destination airport
Heathrow
Airlines serving
TAP Portugal
Return price
£203
Distance
1314 km

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