Cheap Flights from Chicago (ORD) to Union Island (UNI)

Popular airlines from Chicago O'Hare Intl. Airport (ORD) to Union Island (UNI)

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Flights from Chicago (ORD) to Union Island (UNI)
Origin airport
O'Hare Intl.
Destination airport
Union Island
Distance
2578 mi

Chicago to Union Island Flights

The cheapest times to fly from Chicago to Union Island

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Chicago to Union Island are during the month of . You can find some of the cheapest flights from Chicago to Union Island with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Chicago to Union Island

Sunday is one of the best days to book for cheap flights from Chicago to Union Island: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Chicago to Union Island

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Chicago to Union Island in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Chicago to Union Island flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Chicago to Union Island airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from O'Hare Intl. Airport (ORD) to Union Island (UNI) cost?
Snag a cheap one-way flight or cheap return flight from O'Hare Intl. Airport (ORD) to Union Island (UNI) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from O'Hare Intl. Airport (ORD) to Union Island (UNI)?
Planning your trip for is a good way to save, as it's the cheapest month for flights between ORD and UNI. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from O'Hare Intl. Airport (ORD) to Union Island (UNI)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll fly you from ORD to UNI. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from O'Hare Intl. Airport (ORD) to Union Island (UNI)?
There are no daily nonstop flights available from O'Hare Intl. Airport (ORD) to Union Island (UNI). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds before you know it.
What day of the week has the most flights from ORD to UNI?
Typically you'll find the greatest selection of flight options on a Friday. Tuesdays are often the quietest.* However, this can change based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from O'Hare Intl. Airport (ORD) to Union Island (UNI)?
To land at Union Island (UNI) on schedule, book a flight that leaves from O'Hare Intl. Airport (ORD) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from O'Hare Intl. Airport (ORD) to Union Island (UNI) last-minute?
Booking your plane ticket from ORD to UNI just before your getaway is generally more expensive. But if you're flexible with your departure dates and times, you could score a cheap last-minute fare.
Is it cheaper to book an ORD to UNI flight and hotel package?
Compared with arranging flights and hotels separately, booking an ORD to UNI flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place will take the hassle out of planning your trip. Just secure your flights and choose from our extensive range of hotels, then personalize your trip with other add-ons like tours and car rentals.
Can I cancel or change the date of my flight from O'Hare Intl. Airport (ORD) to Union Island (UNI)?
If you reserved your ORD to UNI flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

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*Available to One Key members.