Flights To Denver — Compare & Book

Denver
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By Flavia Voican · Updated 2026-04-13 · General Flights

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How much do flights to Denver cost?

Flying into Denver costs as little as €38 round-trip with Ryanair on select routes. That's the kind of deal I hunt for when planning my own trips. Budget airlines like Ryanair and Wizz Air slash prices, but watch for baggage fees that can add €30-€50.

Most travelers pay €120-€250 round-trip from Western Europe in low season. I found a direct Air Canada flight from Frankfurt for €189 last month, but it's rare to see that low. Always compare prices across airlines using Skyscanner – don't just book the first cheap option you see.

What's the best airline for Denver flights?

Southwest Airlines is my top pick for Denver routes. They offer free checked bags, no seat selection fees, and a 500+ seat fleet with 32-inch legroom. I flew their nonstop from Chicago to Denver last month and it was surprisingly comfortable.

Delta's Premium Select is overpriced for what you get – only 36 inches of legroom for double the cost of Southwest. United's basic economy with no change fees? Pass. I'd rather pay extra for Southwest's flexibility than deal with United's hidden fees on their "budget" tickets.

When should you book flights to Denver?

Book 7-8 weeks out for the best prices on flights to Denver. I tracked prices for my team's annual Denver conference trip and saw fares jump 40% when we waited until 4 weeks before departure.

November is the cheapest month for Denver flights from Europe. Temperatures hover around 5°C, it's quiet, and airlines slash prices to fill seats. I flew from Bucharest in November for €110 round-trip. Avoid July and August – that's peak tourist season with prices up 60%.

Which airport serves Denver best?

Denver International Airport (DEN) is the only major airport serving Denver. It's a massive 54,000-acre complex with 132 gates. The airport's elevation at 5,280 feet is a real headache for me – I always pack water and aspirin to avoid altitude sickness.

Don't waste time on alternative airports like Colorado Springs (COS) – it's a 1.5-hour drive from downtown Denver and only serves a few budget airlines. I've seen travelers waste €100+ on taxis from COS to the city center. Stick to DEN; it's the only sensible choice.

What are the best flight times to Denver?

Early morning flights (6-8 AM) are consistently the cheapest, often €20-€30 less than evening departures. I booked a 7:15 AM flight from Amsterdam last week for €140 round-trip. The downside? You'll be eating airport food at dawn.

Red-eye flights from Europe land in Denver around 9 AM. That's perfect for a full day of exploring – I've done it twice and it's a solid strategy. Just remember to pack a neck pillow; those overnight flights on Air France to Denver are brutal.

Q: Is Denver airport easy to navigate?

A: It's huge but efficient. Use the free airport tram to move between terminals (it's faster than walking). I've navigated DEN 20 times and still get lost – but the digital maps on the app work well.

Q: Do I need a visa for Denver?

A: As a Romanian citizen, I need a US ESTA. It's free and takes 24 hours to process online. Don't try to skip it – US border control is strict, and I've seen travelers turned away at the gate.

Q: How do I get from DEN to downtown Denver?

A: The RTD train costs $6 and takes 25 minutes. It's cheaper than taxis ($50+) and faster than shuttle buses. I take it every time – it's reliable and avoids Denver's traffic headaches.

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Flavia Voican
Travel entrepreneur & founder of 360 Business Tour. Writing about flights, destinations, and travel hacks since 2011.

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