June is the cheapest month to fly this route, with average fares around $95 round trip.
Average round-trip fares by departure month, based on current availability.
| Month | Avg Price | Lowest | Relative Cost | |
|---|---|---|---|---|
| May 2026 | $131 | $48 | ||
| June 2026 | $95 | $41 | Best | |
| July 2026 | $127 | $66 | ||
| August 2026 | $143 | $99 | Peak |
Departing on Wednesday offers the lowest average fares at $92. Monday departures are the most expensive at $160, a difference of $68.
The best time to fly is June. Set up an alert and we'll notify you when prices drop.
Get Started Free →The cheapest month to fly from London to Oslo is June, with average round-trip fares around $95. The lowest fare found in June is $41.
Wednesday departures are the cheapest, averaging $92 round trip. The most expensive day is Monday at $160.
Based on current pricing trends, booking for June travel offers the best value. Avoid August if possible, as fares average $143 compared to $95 in the cheapest month. May is a solid middle-ground option at $131.
Flying in June instead of August can save you approximately $48 per round trip. The cheapest month averages $95 while the most expensive averages $143.
Airlines, flight times, price calendar, and more for London to Oslo
View LHR → OSL Details