Cheap flights from St. Louis (STL) to Sudbury (YSB)

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How to find the cheapest flight from
St. Louis (STL) to Sudbury (YSB)

All the information you need to plan the best STL to YSB flight in 2022: compare St. Louis to Sudbury flight prices with the expected peak season, weather and rainfall in Sudbury.
When is the cheapest time to fly from St. Louis to Sudbury, Ontario (STL - YSB)?

It’s typically best to fly out from St. Louis to Sudbury, Ontario at noon. Doing so could potentially save you 31% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly round-trip from St. Louis to Sudbury, Ontario?

Wednesday flights are generally found to be more expensive for flights from St. Louis to Sudbury, Ontario. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to Sudbury, Ontario.

Related info for your journey

Useful info, stats and facts about <span class="emphasized">St. Louis</span> to <span class="emphasized">Sudbury</span> flights.

COVID Restrictions

View COVID Travel Restrictions for Sudbury, Canada

Do I need a COVID test to fly to Sudbury from St. Louis?

Information is based on travel restrictions from Lambert-St Louis to Sudbury

Most visitors from Lambert-St Louis need to provide a negative COVID-19 test result and/or quarantine to enter Sudbury.

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Sudbury.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Sudbury.

Do I need a test to fly back to St. Louis from Sudbury?

Returning to Lambert-St Louis from Sudbury

COVID-19 testing requirements
Visitors from Sudbury must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 1 day for RT-PCR (NAAT) and 1 day for Antigen (quick-test) before departing to Lambert-St Louis.

Quarantine requirements
Visitors from Sudbury are not required to quarantine after entering Lambert-St Louis.

Hide COVID Travel Restrictions for Sudbury, Canada

Alternative routes for St. Louis to Sudbury

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for Sudbury

Things to know before you go - useful duration and weather info for your trip from St. Louis to Sudbury.
Today's exchange rate
$1 = C$ 1.29
Average temperature for May in Sudbury
64.4 °F
Avg rainfall for May in Sudbury
3.5 ″

Airports servicing St. Louis

Airports servicing Sudbury

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