Cheap Flights from St. Louis to Oslo from $454

Frequently Asked Questions

• What are the cheapest flights from St. Louis to Oslo (STL-OSL)?

  Based on Trip.com data, Lufthansa offers one-way fares as low as $454 on Cheapest nonstop routes (e.g. STL to OSL on Wed, Mar 25), while Lufthansa offers Cheapest nonstop round-trips from $548 departing on Wed, Apr 1 and returning on Wed, Apr 8.

• Which airlines offer direct flights from St. Louis to Oslo?

  At the moment, you can catch a nonstop flight from St. Louis to Oslo with the following airlines, including: Delta Air Lines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• When is the best time to book flights from St. Louis to Oslo?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from St. Louis to Oslo is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How can I find the best deals on flights from St. Louis to Oslo?

  To find best deals on flights from St. Louis to Oslo, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Wed, Mar 25, with one-way flights priced at just $454.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Lufthansa.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Oslo travel is around August.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from St. Louis (STL) to Oslo (OSL) the cheapest?

  The cheapest months to fly from St. Louis to Oslo is September, when demand for travel is lower.

• Which upcoming date is cheapest to fly from St. Louis to Oslo on?

  After crunching the numbers on our March flight calendar, it's currently cheapest to fly from St. Louis to Oslo on March 25, 2026 with Lufthansa, with prices starting at $454.

• Which airports can I fly to for Oslo from St. Louis?

  You can land at any one of the following hubs in Oslo, with St. Louis Lambert International Airport to Oslo Airport (STL-OSL) is by far the most common option on this route: Oslo Airport (OSL) Sandefjord Airport (TRF).

• Is there any time difference between St. Louis and Oslo?

  The time difference between Oslo and St. Louis is 7h.

• How do I change or cancel my ticket from St. Louis to Oslo?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.