Flights to Chicago: The Complete Guide

Flights to Chicago: The Complete Traveler’s Guide

Chicago is the central aviation hub of North America. When you book flights to Chicago, you will arrive at one of two primary international airports: O’Hare International Airport (ORD) or Midway International Airport (MDW). O’Hare is one of the world’s busiest airports, serving as a massive gateway for international carriers and long-haul domestic routes. Midway is the regional alternative, favored by low-cost carriers and domestic commuters. Both airports offer streamlined access to the Loop—Chicago’s downtown core—via the city's extensive "L" train system. Whether you are flying for business or a weekend trip, understanding these hubs is key to finding the best deals.

Which airport should you fly into?

Choosing between Chicago’s two airports depends on your airline preference and your final destination within the city.

• O’Hare International Airport (ORD): Located 18 miles northwest of downtown. It serves as a major hub for United Airlines and American Airlines. It handles almost all international arrivals.
• Midway International Airport (MDW): Located 10 miles southwest of downtown. It is a major base for Southwest Airlines. It is smaller, easier to navigate, and often closer to the city center, but has fewer international options.

Best time to book flights to Chicago

Timing determines your fare. For domestic travel, you should book flights to Chicago exactly 21 to 45 days before your departure. This window typically offers the best balance between availability and price. For international travelers, the ideal booking window is 3 to 6 months in advance.

Avoid booking on weekends. Tuesday and Wednesday afternoons are statistically the cheapest times to finalize your purchase. If you are traveling for major events like Lollapalooza or the Chicago Marathon, increase your booking lead time to at least four months to avoid surge pricing.

Cheapest months to fly to Chicago

January and February are the cheapest months to fly to Chicago. The harsh winter weather drives demand down, resulting in the lowest airfares of the year. If you can handle sub-zero temperatures, you will find significant savings on both flights and hotels.

The shoulder seasons—late April, May, September, and October—offer a compromise between decent weather and moderate prices. Avoid July and August if you are looking for the cheapest flights to Chicago, as summer tourism peaks during these months, driving prices to their annual highs.

Direct flights vs connecting flights

Direct flights to Chicago are abundant due to the city’s central geographic location. O’Hare serves as a primary connection point for transcontinental flights, meaning you can find non-stop service from almost every major city in the U.S. and many global capitals.

Connecting flights can sometimes lower the price, particularly if you are flying from the West Coast or Europe. However, because Chicago is a major hub, the price difference between a direct and a connecting flight is often negligible. If a connection saves you less than $50, the risk of delays at a mid-way airport usually isn't worth the savings.

Best airlines flying to Chicago

Several major carriers dominate the Chicago market. Your choice will likely depend on your loyalty program or your starting city.

• United Airlines: Uses O’Hare as its primary global hub with the highest frequency of flights.
• American Airlines: Operates a massive network out of O’Hare, covering most domestic and several international routes.
• Southwest Airlines: The primary carrier at Midway; offers two free checked bags which can lower the total cost of travel.
• Delta Air Lines: Offers frequent service to both O'Hare and Midway from its major hubs like Atlanta and Minneapolis.
• British Airways / Lufthansa: Provide consistent long-haul international service into O’Hare from European hubs.

Getting from the airport to the city center

Chicago has one of the best airport-to-city transit setups in the United States. You do not need a car to reach downtown.

From O’Hare (ORD)

• CTA Blue Line Train: $5.00. Takes about 45 minutes to reach the Loop. Runs 24/7.
• Taxi: $40–$60. Takes 35 to 90 minutes depending on traffic.
• Rideshare (Uber/Lyft): $35–$70. Prices fluctuate based on demand.
• GO Airport Express: $30. A shared shuttle service to major hotels.

From Midway (MDW)

• CTA Orange Line Train: $2.50. Takes about 25 minutes to reach the Loop.
• Taxi: $30–$40. A faster and cheaper ride to downtown than from O'Hare.
• Rideshare (Uber/Lyft): $25–$50. Generally more affordable than O'Hare pickups.

Flight duration from major cities

Chicago’s location makes it accessible. Here are the average flight times from major global hubs:

• New York (JFK/LGA): 2 hours 30 minutes
• Los Angeles (LAX): 4 hours 15 minutes
• London (LHR): 8 hours 30 minutes
• Dubai (DXB): 14 hours 45 minutes
• San Francisco (SFO): 4 hours 30 minutes
• Toronto (YYZ): 1 hour 45 minutes
• Mexico City (MEX): 4 hours

Tips for finding cheap flights to Chicago

Finding the cheapest flights to Chicago requires a mix of flexibility and strategy. Use these tactics to lower your fare:

1. Check both ORD and MDW: Many search engines default to O'Hare. Manually select "All Airports (CHI)" to see if Midway offers a lower fare, especially on Southwest or Frontier.
2. Fly mid-week: Flights departing on Tuesday or Wednesday are consistently cheaper than Friday or Sunday departures.
3. Monitor "L" availability: If you find a cheap flight into O'Hare but your hotel is on the South Side, the 90-minute commute might negate your savings. Factor in the cost of your time.
4. Use fare alerts: Set up notifications for your specific dates. Chicago prices fluctuate rapidly due to convention schedules at McCormick Place.
5. Avoid holiday weekends: Prices for Memorial Day, Labor Day, and Thanksgiving spike significantly. If you must fly during these times, book at least 60 days out.