In terms of precipitation, rainfall in Belfast Intl Airport ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Belfast Intl Airport when rainfall is around 50.0 mm.

If weather is an important factor for your trip to Belfast Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

What is the cheapest time of day to fly from MO to BFS?

When flying from Missouri to Belfast Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Can I find deals for flights from Missouri to Belfast Intl that include hotel bookings?

Yes. In addition to deals on Missouri to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Missouri to Belfast Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Belfast Intl.

Can I find deals for business class flights from Missouri to Belfast Intl?

Yes. Cheapflights offers flight deals from Missouri to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£740+ Cheap Flights from Missouri to Belfast Intl Airport

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Cheapest flights from Missouri to Belfast Intl
Explore the most affordable flight options available from Missouri to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 10 October 2025.

Fri 14/1115:50STL - BFS

2 stops21h 25mMultiple Airlines

Sat 22/1108:50BFS - STL

2 stops35h 05mMultiple Airlines

Deal found 9/10£740

Cheap flight deals from Missouri to Belfast Intl

Round-trip from	£740

14/11-22/11
4 total stops
56h 30m total
Missouri to Belfast

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Fly from

Fly to

Route

Depart

Return

Price

St. LouisBelfast

STL - BFS

STLBFS

Lambert-St Louis

Fri 14/11

15:50-19:15

2 stops21h 25m

Belfast Intl

Sat 22/11

08:50-13:55

2 stops35h 05m

£740

Flights are sorted by cheapest return flights first.

Deals found on 9/10

Best time to book a flight from Missouri to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl from Missouri with our price prediction graph.

Estimated return price

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Related info for your journey

Can I find deals for flights from Missouri to Belfast Intl that include hotel bookings?
Yes. In addition to deals on Missouri to Belfast Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Missouri to Belfast Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Belfast Intl.
Can I find deals for business class flights from Missouri to Belfast Intl?
Yes. Cheapflights offers flight deals from Missouri to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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Cheap flights from Missouri to Belfast Intl Airport from £740

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/11. Fares are subject to change and may not be available on all flights or dates of travel.