
Cheapest Chicago to Austin Flights? Insider Tips for Maximum Savings
Flying from Chicago to Austin doesn’t have to drain your travel budget. Whether you’re heading to the live music capital for a weekend getaway, business conference, or extended adventure, finding affordable Chicago to Austin flights requires strategy, timing, and insider knowledge. The route between O’Hare International Airport (ORD) and Austin-Bergstrom International Airport (AUS) is competitive, which means savvy travelers can capitalize on price fluctuations and special deals to save hundreds of dollars.
Austin’s vibrant culture, world-class barbecue scene, and thriving tech industry make it an increasingly popular destination from the Midwest. However, flight prices can vary dramatically depending on when and how you book. This comprehensive guide reveals proven tactics used by frequent flyers and travel professionals to secure the cheapest possible fares on this route, ensuring you have more money to spend exploring Lady Bird Lake, enjoying live performances on Sixth Street, or discovering hidden gems across the Texas Hill Country.

Best Time to Book Your Flight
Timing your booking is perhaps the single most important factor in securing cheap Chicago to Austin flights. Industry research consistently shows that booking between 1-3 months in advance typically yields the lowest fares for domestic routes. However, this window can shift based on demand, seasonal factors, and airline pricing algorithms.
For this specific route, Tuesday and Wednesday bookings historically show lower prices than weekend bookings. Airlines release weekly sales and adjust prices on Tuesday mornings, creating an opportunity for deal hunters. Setting up price alerts on multiple platforms ensures you capture these brief windows when fares dip. Many travelers miss savings simply because they book on Friday evening or Sunday afternoon when prices are at their peak.
Flash sales and error fares occasionally appear on this route, particularly during promotional periods. Following airline social media accounts, travel deal websites, and Kayak’s price alerts helps you stay informed about unexpected opportunities. Some travelers have found fares as low as $79 round-trip during promotional periods, though these require flexibility and quick action.

Day of Week Booking Strategies
Beyond the day you book, the actual travel day significantly impacts pricing. Tuesday through Thursday flights typically cost 15-25% less than weekend departures. If your schedule permits, flying on a Wednesday or Thursday can save you $50-150 per ticket compared to Friday or Saturday options.
Early morning flights (departing before 7 AM) and late evening flights (departing after 8 PM) frequently offer better prices than mid-day options. While these times require some adjustment to your schedule, the savings often exceed $40-80 per person. A 6 AM departure might feel inconvenient, but arriving in Austin by mid-morning leaves your entire day open for exploration.
Mid-week evening flights present an interesting sweet spot: they’re cheaper than peak times but still allow you to enjoy evening activities upon arrival. Avoiding peak travel periods—school holidays, major festivals, and holiday weekends—dramatically improves your chances of finding bargain fares.
Comparing Airlines on This Route
Several carriers operate between Chicago and Austin, each with different pricing strategies and service levels. Southwest Airlines dominates this route with multiple daily flights and their famous two free checked bags policy, making them excellent for budget-conscious travelers with luggage. United Airlines offers competitive pricing through their hub operations and frequently has deals on this route. American Airlines provides additional options, particularly for connections through Dallas-Fort Worth.
Budget carriers like Spirit Airlines and Frontier Airlines occasionally offer rock-bottom base fares, but their strict baggage policies and seat selection fees can eliminate savings. Calculating total cost—including baggage fees, seat selection, and other ancillaries—gives you the true picture of which airline offers the best value.
If you’re comparing specific carriers, reviewing United Airlines Flight 175 performance and reliability can inform your decision. Checking recent customer reviews and on-time performance statistics helps you balance price with service quality. Sometimes paying slightly more for a reliable carrier with good customer service proves worthwhile.
Flexibility as Your Secret Weapon
Flexibility is the ultimate money-saving tool for finding cheap Chicago to Austin flights. Being willing to fly on unpopular dates—like Tuesday morning rather than Friday evening—can save hundreds of dollars. Similarly, flexible return dates allow you to capitalize on cheaper flights mid-week rather than forcing yourself to return on Sunday.
Using flexible date search tools on Google Flights, Kayak, and Skyscanner visualizes price variations across entire months. You’ll immediately see which dates are cheapest and most expensive, helping you plan your trip strategically. Sometimes shifting your departure by just one day saves $100-200 per ticket.
If you have the luxury of flexible return dates, staying an extra day or two in Austin often costs less than flying back on your originally planned date. The math works because airlines price weekend returns at premium rates. This flexibility can transform your weekend trip into a more extended adventure without breaking the bank.
Essential Booking Tools and Alerts
Modern travel technology makes finding deals easier than ever. Google Flights remains the gold standard for tracking prices and setting alerts. Its price tracking feature notifies you when fares change, letting you monitor your route for weeks before booking. The calendar view shows price variations across the entire month, making it simple to spot cheap days.
Kayak’s price alerts function similarly, sending email notifications when prices drop below your target threshold. Setting alerts for $150-200 round-trip on Chicago to Austin flights ensures you’re notified about genuinely great deals. Skyscanner excels at finding connecting flights and alternative routing options that might be cheaper than direct routes.
Airline websites often have exclusive deals unavailable through third-party booking sites. Checking Southwest, United, and American directly—especially their “deals” or “low fares” pages—sometimes reveals prices lower than aggregator sites. Airline apps occasionally feature app-exclusive fares, rewarding direct bookings with additional savings.
Email newsletters from The Flight Deal and similar deal-tracking sites alert subscribers to exceptional sales on this route. These communities of deal hunters often identify errors and promotions before they’re widely known, giving you competitive advantage.
Advance Planning Tactics
Planning ahead dramatically improves your negotiating position with airfare. Travel experts recommend booking domestic flights 1-3 months in advance, though this varies seasonally. For peak travel periods like spring break or summer vacation, booking 2-3 months ahead often provides better prices than last-minute bookings.
Creating a travel calendar helps you identify which weeks offer the best combination of low fares and favorable conditions. If you’re planning a winter getaway, Austin’s mild climate makes it perfect for escaping harsh Midwestern weather. Winter months (January-February, excluding holidays) typically feature cheaper flights than summer peaks.
Setting calendar reminders to check prices weekly starting 3 months before your planned trip establishes a baseline understanding of price trends. You’ll notice patterns—like consistent Tuesday dips or weekend spikes—that inform your final booking decision. This systematic approach removes emotion from the process and helps you book with confidence.
Booking both outbound and return flights together sometimes costs less than booking separately, though occasionally splitting them saves money. Price both options before committing. Additionally, using incognito browser windows prevents airlines from tracking your searches and potentially raising prices based on your browsing history.
Seasonal Price Patterns
Chicago to Austin flights follow predictable seasonal patterns. Summer months (June-August) and spring break periods command premium prices as families vacation and students travel. Winter months offer the best deals, particularly January and early February when few people travel for leisure.
Austin’s South by Southwest (SXSW) festival in March dramatically increases flight prices during that period. If you’re considering March travel, booking well in advance or avoiding peak festival weeks saves substantially. Similarly, April and May see price increases as spring break travelers and summer vacation planners book.
September and early October offer a sweet spot: post-summer pricing without holiday premiums. Labor Day week is expensive, but the weeks immediately after provide excellent deals. November before Thanksgiving is affordable, though Thanksgiving week and the day before are among the most expensive travel periods.
Understanding these patterns lets you plan your Austin adventure strategically. If you have flexibility, traveling during off-peak periods saves money while still providing pleasant weather. Austin’s outdoor activities and Austin tourism board events occur year-round, so choosing less popular seasons doesn’t limit your experiences.
Alternative Airport Options
While O’Hare is Chicago’s primary airport, considering Midway International Airport (MDW) sometimes reveals cheaper fares. Budget carriers often use Midway, and prices can be $30-80 cheaper than O’Hare flights. Since Midway is closer to downtown Chicago, you might also save on ground transportation.
In Austin, Austin-Bergstrom (AUS) is the primary airport, but checking nearby alternatives like San Antonio (SAT) occasionally yields savings, though ground transportation costs may offset any airfare savings. Generally, sticking with Austin’s main airport makes sense given the city’s central location for your activities.
Exploring connections through alternative routing options sometimes reveals surprisingly cheap fares. A flight routing through Dallas or Houston might cost significantly less than direct options, particularly on budget carriers. However, calculate total travel time—a 3-hour layover might not justify minimal savings.
Using multi-city search options lets you explore creative routing possibilities. For instance, flying Chicago to Dallas, then Dallas to Austin might cost less than direct flights. These unconventional routes require more research but can yield substantial savings for flexible travelers.
FAQ
What’s the cheapest month to fly from Chicago to Austin?
January and February typically offer the cheapest fares, with September and early October as secondary budget months. Summer months (June-August) are most expensive. Avoiding holiday weeks and major festivals maximizes savings.
How far in advance should I book Chicago to Austin flights?
Book 1-3 months ahead for optimal pricing on this domestic route. For peak travel periods, 2-3 months advance booking provides better deals than waiting. However, setting price alerts weeks in advance helps you identify the best booking window.
Are Tuesday flights really cheaper?
Yes, booking on Tuesday typically reveals lower prices, as airlines release weekly sales Tuesday mornings. However, flying on Tuesday (rather than booking on Tuesday) also tends to be cheaper than weekend flights. Both factors combined create significant savings opportunities.
Should I book directly with airlines or use third-party sites?
Compare both options before booking. Airlines occasionally have exclusive deals unavailable elsewhere, but third-party sites like Google Flights and Kayak often show competitive pricing. Always calculate total cost including baggage fees and seat selection.
Can I save money flying into San Antonio instead of Austin?
Sometimes, but check ground transportation costs carefully. San Antonio is 80 miles from Austin, making rental cars or rideshares necessary. Often, slightly higher Austin fares prove cheaper when accounting for ground transportation and convenience.
What’s the average price for Chicago to Austin flights?
Average round-trip fares range from $200-400, depending on season and how far in advance you book. Budget travelers frequently find deals under $200, while peak season flights might exceed $500. Setting price alerts for $150-200 helps you identify genuinely great deals.
Do budget airlines offer better deals on this route?
Budget carriers sometimes have lower base fares, but baggage fees and seat selection charges add up quickly. Southwest’s free baggage policy often makes them cheaper overall than Spirit or Frontier, despite higher base fares. Calculate total cost rather than focusing solely on advertised prices.
Is flying early morning or late night cheaper?
Yes, 6 AM departures and flights after 8 PM typically cost 15-25% less than mid-day options. Early arrivals also maximize your first day in Austin, making the inconvenience worthwhile for many travelers.
