When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 56 days in advance, which can save you up to 28% on flights from Illinois to Guam compared to booking the week you need them. Waiting 56 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $1,878. For sooner than that we have options available in the next 3 days from $2,255.
March is one of the best times of the year to fly to Guam from Illinois. Prices for March average $1,872 per person but you can even find prices for as low as $1,018. The most expensive prices can be found in the month of February. Opting for a March flight can save you 7% on your journey compared to booking in March