United Flight 4787 Deals & Information (2025/2026)

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United Flight 4787 Route Deals From $207

The cheapest prices found with in the last 7 days for return flights were $189 and $207 for one-way flights to O'Hare Intl. for the period specified. Prices and availability are subject to change. Additional terms apply.

Frequently asked questions

What route does flight number UA4787 take?
UA4787 serves multiple routes, but the most common is between O’Hare Intl. Airport (ORD) and Lambert Field. If you’re lucky enough to score a direct flight, you’ll touch down in 1 hour and 18 minutes. Multi-stop flights can also use this number, as can services on other routes.
What terminal does UA4787 fly out of?
Terminal 2 is the terminal you’ll likely jet off from if you’re booked on a flight out of Chicago, IL Airport (ORD-O’Hare Intl.). Chicago, IL Airport (ORD-O’Hare Intl.) to Lambert Field is the most commonly traveled route for flight number UA4787.
What kind of plane is on flight number UA4787?
UA4787 is a flight number that serves a number of routes. If you’ve booked a ticket on the most common route, O’Hare Airport to St. Louis, MO Airport (STL-Lambert-St. Louis Intl.), you’ll probably be hopping on board the Embraer 175.
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 UA4787 flight with Travelocity, please visit our Customer Service Portal.