United Flight UA331 Deals & Information (2025/2026)

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United Flight 331 Route Deals From $5,161

The cheapest prices found with in the last 7 days for return flights were and $5,161 for one-way flights to Washington Dulles Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

What route does flight number UA331 take?
UA331 is used on a range of routes. Most commonly, UA331 flies directly from BOI to ORD. If that's your flight path, you'll be up above the clouds for about 3 hours and 20 minutes.
What kind of plane is on flight number UA331?
UA331 is a flight number that's used on a number of routes. If you're booked on the most popular one, Boise Airport to ORD, there's a strong chance you'll be on an Airbus A319.
If I am not able to travel due to COVID-19, can I change my flight to a later date?
For more info about changing your UA331 flight with Travelocity, please visit our Customer Service Portal.