How to find the cheapest flight from Shannon (SNN) to St Louis (STL)
All the information you need to plan the best SNN to STL flight in 2021: compare Shannon to St Louis flight prices with the expected peak season, weather and rainfall in St Louis.
How far in advance should I book a flight from Shannon to St Louis?
To save on the cost of your flight from Shannon to St Louis, book at least 57 days before your planned departure. Booking around this time can save you about 14% on the cost of this flight compared to booking a flight leaving this week. We have found prices from £609 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as £652.
Related info for your journey
Useful info, stats and facts about <span class="emphasized">Shannon</span> to <span class="emphasized">St Louis</span> flights.
From Shannon to St Louis
Are flight prices decreasing from Shannon to St Louis due to COVID-19 (coronavirus)?
At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Shannon and St Louis for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.
Does it rain more in Shannon or St Louis?
When travelling, it's generally smart to pack in preparation for rain or any other conditions that may arise. The rainfall in Shannon is roughly less than St Louis. You can assume this to be the case over the next 24 days.
Is Shannon weather warmer or cooler than St Louis?
With an average temperature of 32 °C, peak weather can be found in July. As a traveller, expect to see changes in flight prices during that period. The temperatures in St Louis are hotter than in Shannon.