Cheap flights from London-Heathrow to Sioux City
Cheap return flights from London-Heathrow to Sioux City
Find the best deals
All prices shown are per person based on return flights only. Prices found in the last 48 hours.
Sioux City flight facts
What you need to know
What are the cheapest airlines?
- American Airlines
- United Airlines
- Delta Air Lines
These airlines usually offer the cheapest flights from London-Heathrow to Sioux City.
What airlines fly indirectly?
- British Airways
- Lufthansa
- Air Canada
These airlines fly from London-Heathrow to Sioux City, but you’ll have at least one layover.
How long is the flight?
15 hours
This is the shortest flight time from London-Heathrow to Sioux City.
Alternative flights from the UK to Sioux City
Check out prices for other routes
Alternative flights from London-Heathrow
You might find cheaper flights nearby
Today alone, Netflights has searched over five flights. 05 / Feb / 2026 is currently the lowest priced day of the year to fly the London-Heathrow/Sioux City route. There are around 35 flights on any given week from the UK to Sioux City and the cheapest month to fly right now is February. Not suitable? Try running another search or viewing all cheap flight deals.
How to get cheap flights from London-Heathrow to Sioux City
Tips and advice from our flight experts
You've searched for flights from London-Heathrow to Sioux City. We've found 25 flights and compared them to give you the best offer. American Airlines is typically the cheapest for this route, so keep an eye on them. The cheapest offer we've found is a one-way ticket for the route London-Heathrow to Sioux City on 19/06/2026 at 11:05 for £83.
We've scanned hundreds of airfares from various airlines across the globe. In total, we've found 5 airlines that operate the 7,000 km flight from London-Heathrow to Sioux City.
To find the best offers, consider booking 2-3 months in advance or looking for last-minute deals. Flying during off-peak seasons can also save you money. American Airlines is a popular choice for this route, with an average flight duration of 15 hours. After selecting an offer, fill out your information and proceed to payment. Don't forget to check our flight + hotel service to book everything at once, saving you time and money.
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