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RDU → CHI · about 1h 56m nonstop · 646 miles · 4 airlines · fares updated September 16, 2026
Fares shown are recorded lows. An agent confirms today's live price on the call.
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Call to book from $144(708) 866-8751The lowest fares recorded on this route in recent searches. Call and an agent checks whether a similar fare is still open for your dates.
Recorded fares for RDU to CHI from cached search data, not live quotes. An agent confirms availability and today's price on the call.
This guide covers everything you need to book a flight from Raleigh-Durham (RDU) to Chicago (CHI): recent low fares, airlines, flight time, airport choices, and the cheapest months. Prices below are recorded lows rather than live quotes, so call (708) 866-8751 for a current fare; agents are available 24/7, every day.
The lowest one-way fare we have on record for this route is $144, and $210 round-trip. Fares like that usually show up on off-peak days and for travel booked a few weeks out; an agent can check whether a similar fare is available for your dates.
Because Delta Air Lines treats Chicago as a hub, this pairing tends to have frequent departures throughout the day. American Airlines and Southwest Airlines also compete here, which keeps fares in check.
The 646 miles between Raleigh-Durham and Chicago works out to about 1h 56m in the air, the range where nonstops are common on busy days and connections through a hub fill in the rest. Ask the agent to compare both; the one-stop is sometimes cheaper by a wide margin.
Lowest recorded one-way fare by departure date, next 8 days with data. Green bars are within 10% of the cheapest day.
Cheapest day in range: Tuesday, September 29 at $139. Recorded lows, not live quotes.
Southern departures see their highest fares over spring break and the winter holidays; late summer and the weeks after Labor Day typically bring the lowest prices.
Tuesday, Wednesday, and Saturday departures are usually the cheapest days on domestic routes; Friday and Sunday are the most expensive. Early-morning and late-evening flights are often priced below the midday departures.
For domestic travel, booking three to eight weeks ahead usually captures the best price. Inside two weeks, fares climb; more than four months out, airlines have not yet released their cheapest inventory.
Carriers most likely to serve this route, with the lowest fare recorded for each where our data names the airline. Agents compare all of them on one call.
| Airline | Recorded from | Changes on standard fares | Lowest fare brand | Call |
|---|---|---|---|---|
| Delta Air Lines | ask an agent | No fee, fare difference | Basic Economy | Call(708) 866-8751 |
| United Airlines | ask an agent | No fee, fare difference | Basic Economy | Call(708) 866-8751 |
| American Airlines | ask an agent | No fee, fare difference | Basic Economy | Call(708) 866-8751 |
| Southwest Airlines | ask an agent | No fee, fare difference | Basic | Call(708) 866-8751 |
Carriers listed are those most likely to serve the pair based on hubs and recorded fares. WarBird Flight is independent and not affiliated with any airline.
Departures use Raleigh–Durham International Airport (RDU), a hub for Delta.
On arrival, Chicago is served by O'Hare International Airport (ORD) and Chicago Midway International Airport (MDW). Choose by where you are staying: the fare difference is often smaller than the taxi fare across town.
Fares from a neighboring airport are sometimes far lower than the drive is long. Agents quote all of these on one call.
Licensed agents at our partner agency handle these by phone, 24/7. No charge for a quote.
The lowest one-way fare we have recorded recently is $144, and $210 round-trip. Fares change daily; call (708) 866-8751 for today's price.
A nonstop flight takes about 1h 56m to cover 646 miles. Connecting itineraries add two to five hours depending on the layover.
Delta Air Lines, United Airlines, American Airlines, and Southwest Airlines are the carriers most likely to serve this route. We book all of them.
Southern departures see their highest fares over spring break and the winter holidays; late summer and the weeks after Labor Day typically bring the lowest prices.
Yes. Call (708) 866-8751 and a live agent will search every airline, quote today's fare, and book it for you. WarBird Flight is an independent travel booking service; calls are answered by licensed travel agents at our partner agency.
Raleigh–Durham International Airport (RDU) is the airport for this route.
A government-issued photo ID such as a REAL ID-compliant driver's license, a passport, or a passport card. Children under 18 flying with an adult do not need ID on domestic flights. If your license is not REAL ID-compliant, bring a passport.
Yes on most carriers, with an unaccompanied-minor service fee and age limits that differ by airline. Nonstop flights are strongly preferred and some airlines require them for younger children. Agents can book the service, note the guardian details, and confirm the fee before you pay.
