The cheapest month to fly to Thunder Bay from United Kingdom is in February. Flight prices, which tend to average around £443, are often lower during this time because this is during the off-season. If you don’t want to visit Thunder Bay in February, then you should wait until October to fly from United Kingdom, when ticket prices are also cheap, with an average price of £461.
The cheapest day to depart from United Kingdom to Thunder Bay is on a Tuesday. Travellers who choose to depart for Thunder Bay on a Tuesday will often find tickets for as low as £488. The most expensive day to fly to Thunder Bay is Saturday, with ticket prices averaging around £600.