Cheap Flights From Chicago (ORD, MDW) | 2026 Deals, Routes & Tips

Finding Cheap Flights From Chicago

Chicago is served by two major airports: O'Hare International Airport (ORD), a global mega-hub, and Midway International Airport (MDW), a major base for low-cost carrier Southwest Airlines. This dual-airport system provides one of the most extensive and competitive flight networks in the world, spanning every continent and catering to all budgets.

O'Hare (ORD) offers an immense international network with direct flights to Europe, Asia, Africa, South America, and across North America. Midway (MDW) focuses on domestic and some international leisure travel, with a dense network of point-to-point flights across the U.S., Mexico, and the Caribbean. Top domestic routes from both include coasts and major cities like New York, Los Angeles, and Atlanta.

O'Hare is a primary hub for United Airlines and American Airlines, and a major base for dozens of international carriers. Midway is dominated by Southwest Airlines. Both airports are also served by Delta Air Lines, JetBlue, Frontier, and Spirit, creating fierce competition on many routes.

To secure the cheapest flights, always compare fares from both ORD and MDW. For international travel, book from O'Hare 3-6 months in advance. For domestic leisure travel, book from Midway on Southwest 1-3 months ahead. Use flight comparison tools with a "Chicago (All Airports)" search. Flying on weekdays (Tuesday-Thursday) is cheaper. Chicago is a prime market for flash sales and error fares. For the best deals on specific routes, set price alerts for both airports. Midway is often cheaper for domestic point-to-point travel, while O'Hare offers more options for complex itineraries.