# **Can't Check-In Frontier Airlines? Here’s Everything You Need to Know**
Can't check-in for your Frontier Airlines flight? Call 1-833-341-3894 for immediate support. Get help with online check-in issues, boarding passes, and account verification—available 24/7.
Air travel should be smooth, efficient, and stress-free. But sometimes, just trying to **check in for your flight** can cause unexpected headaches. If you’re having trouble checking in with **Frontier Airlines**, you’re not alone.
Whether you're using the app, website, airport kiosk, or dealing with an error message, this **detailed guide** will explain **why you can't check in** — and exactly how to **fix it step-by-step**.
---
## **Table of Contents**
1. Introduction: What Is Check-In?
2. Frontier Airlines Check-In Methods
3. When Can You Check-In?
4. Why You Might Be Unable to Check In: All Possible Reasons
5. Technical Errors with the Frontier App or Website
6. Solutions Based on the Problem Type
7. Step-by-Step: How to Check In Properly
8. Frontier Airlines Check-In at Airport: What to Expect
9. Special Situations That Block Online Check-In
10. Travel with Pets, Infants, or Groups
11. What to Do If You Miss the Check-In Window
12. Check-In Fees and Charges
13. How to Avoid Check-In Problems in the Future
14. Contacting Frontier Airlines for Help
15. Frequently Asked Questions
16. Final Thoughts: Plan Ahead and Travel Smoothly
---
## **1. Introduction: What Is Check-In?**
Before boarding your flight, you must complete the **check-in process**. This confirms your travel, allows seat selection, and issues your **boarding pass**.
Most airlines, including Frontier, allow:
* **Online check-in** (via app or website)
* **Airport check-in** (via self-service kiosk or counter)
But sometimes this basic process doesn't go smoothly. Let’s look at why.
---
## **2. Frontier Airlines Check-In Methods**
Frontier Airlines offers four main ways to check in:
### ✅ 1. **Online Check-In (Website)**
* Starts: 24 hours before departure
* Ends: 60 minutes before departure
### ✅ 2. **Mobile App Check-In**
* Same time window
* Offers mobile boarding pass
### ✅ 3. **Airport Self-Service Kiosks**
* Located near Frontier counters
* Ideal for bag tag printing or if app fails
### ✅ 4. **Check-In at Airport Counter**
* Last resort (can cost extra)
* Required for certain passengers (e.g., unaccompanied minors)
---
## **3. When Can You Check-In?**
You can check in starting **24 hours** before your flight and **up to 60 minutes** before takeoff. This applies to domestic and international flights alike.
But if you're blocked from checking in, there’s a reason — and likely a fix.
---
## **4. Why You Might Be Unable to Check In: All Possible Reasons**
### 🔴 Common Check-In Problems with Frontier:
| Reason | Description |
| ----------------------------- | ------------------------------------------------ |
| ❌ Unpaid baggage or seat fees | Frontier may block check-in until fees are paid |
| ❌ Name mismatch | If your name doesn’t match your ID exactly |
| ❌ Mobile app glitch | Bugs or crashes can block check-in |
| ❌ Booking not found | Wrong confirmation code or expired trip |
| ❌ Travel with infant/pet | These require airport check-in |
| ❌ Flight changes or delays | System may temporarily block check-in |
| ❌ Airport-only check-in rules | Applies to certain passenger types |
| ❌ TSA/CBP flag | Security or passport verification needed |
| ❌ Group booking error | Check-in blocked if not all details are complete |
---
## **5. Technical Errors with the Frontier App or Website**
Even when everything is correct, technical issues can occur:
* **App won't load**
* **Spinning screen after login**
* **Page reloads or crashes**
* **Payment fails at checkout**
These issues can be frustrating — but they’re usually easy to resolve.
---
## **6. Solutions Based on the Problem Type**
Let’s match your check-in problem with the best fix:
---
### ✅ **Unpaid Baggage or Seat Fees**
**Solution:**
1. Go to **“My Trips”** on Frontier’s website.
2. Add your bags or select a seat.
3. Pay the required fee.
4. Retry online check-in.
---
### ✅ **Name Spelling or ID Mismatch**
**Solution:**
* Contact Frontier customer service immediately at **801-401-9000**.
* Request a name correction (fees may apply).
* You’ll need to check in at the airport afterward.
---
### ✅ **Mobile App Glitch**
**Solution:**
* Delete and reinstall the Frontier app.
* Use a different device or switch to the website.
* Clear browser cookies if using a desktop.
---
### ✅ **Traveling with Infant or Pet**
**Solution:**
* Check in **at the airport** only.
* Bring all required documents (e.g., birth certificate, pet vaccine record).
* Arrive at least 2 hours early.
---
### ✅ **Group Booking or Travel Package**
**Solution:**
* If booked via a third party (Expedia, etc.), contact them.
* If booked directly but multiple travelers involved, make sure each traveler’s info is complete.
* You may need to check in at the airport.
---
## **7. Step-by-Step: How to Check In Properly (Online or App)**
Here’s the correct way to check in to avoid problems:
### 💻 Online (Website)
1. Go to [www.flyfrontier.com](https://www.flyfrontier.com)
2. Click on **“Check-In”**
3. Enter:
* Last name
* Confirmation code
4. Follow the steps:
* Add bags or select seat (if needed)
* Confirm traveler info
* Pay any fees
5. Get boarding pass via email, download, or print
---
### 📱 Mobile App
1. Open the **Frontier Airlines app**
2. Log in or find booking using your confirmation code
3. Tap “Check-In”
4. Follow the prompts
5. Save boarding pass or add to mobile wallet
---
## **8. Frontier Airlines Check-In at Airport: What to Expect**
If online check-in doesn’t work, you can always go to the airport.
### 📍 Airport Check-In Rules:
* Must arrive **at least 2 hours early**
* Check-in closes **60 minutes before departure**
* Be prepared to:
* Show ID
* Pay fees
* Print boarding pass
⚠️ Note: Airport check-in may cost **\$25+** depending on your fare type.
---
## **9. Special Situations That Block Online Check-In**
Some cases require **in-person check-in**:
| Situation | Why It Requires Airport Check-In |
| -------------------------------------- | ---------------------------------------- |
| Lap infants | To verify age and documents |
| Pet in cabin | Carrier and weight check |
| Wheelchair assistance | Staff must verify medical needs |
| Unaccompanied minors | Airline must confirm travel arrangements |
| Paper ID or expired ID | TSA requires manual validation |
| Booking with special codes or vouchers | Manual processing often required |
---
## **10. Traveling with Pets, Infants, or Groups**
### 🐾 **Pets:**
* Not allowed in online check-in
* Must meet strict carrier and weight requirements
* Only certain flights allow pets
### 👶 **Infants:**
* Children under 2 flying as lap infants require in-person age verification
* Bring a birth certificate or passport
### 👨👩👧👦 **Groups:**
* More than 9 travelers on one reservation may need group check-in assistance
* Check-in could be blocked until all travelers are confirmed
---
## **11. What to Do If You Miss the Check-In Window**
Missed the 60-minute cutoff? Here's what you can do:
### 😬 Options:
* **Go to airport**: You may still be rebooked on next flight (fees apply)
* **Call Frontier immediately**: 801-401-9000
* **Check rebooking options** online
⚠️ Warning: No-shows may lose the value of their ticket entirely.
---
## **12. Check-In Fees and Charges**
Frontier operates as an **ultra-low-cost airline**, so almost everything extra costs money — including check-in options.
| Service | Fee |
| ---------------------- | ----------------------------- |
| Online check-in | Free |
| Mobile app check-in | Free |
| Airport kiosk | \$4 (may vary) |
| Airport agent check-in | \$25+ |
| Printing boarding pass | \$2 at kiosk, \$5+ at counter |
Avoid extra fees by checking in **online and early**.
---
## **13. How to Avoid Check-In Problems in the Future**
Here are some simple but effective tips:
### ✈️ 1. **Check In Exactly 24 Hours Before Departure**
Set a reminder and check in the moment it opens.
### ✍️ 2. **Double Check Name Spelling**
Ensure your name matches your government ID or passport.
### 💼 3. **Pre-Pay for Bags and Seats**
Paying for extras early reduces check-in stress.
### 📲 4. **Install the Latest Version of the App**
Old apps cause glitches — update regularly.
### 👨👩👦 5. **Avoid Third-Party Booking Errors**
If possible, book directly with Frontier to avoid delays or sync issues.
---
## **14. Contacting Frontier Airlines for Help**
If you’re stuck and need help fast, here’s how to reach Frontier:
### 📞 Frontier Customer Support:
* **Phone:** 801-401-9000 (6am–11pm MT, 7 days a week)
* **Online Chat:** Available via [flyfrontier.com](https://www.flyfrontier.com)
* **WhatsApp:** Support via Frontier app
* **Social Media:** Tweet @FlyFrontier
Pro Tip: Use chat or the app for quicker service than calling.
---
## **15. Frequently Asked Questions (FAQs)**
### **Q1: Why is my Frontier reservation not showing up?**
Double-check your confirmation code and last name. If still not found, your flight may be canceled or booked via a third-party.
### **Q2: Can I check in without selecting a seat?**
Yes, but Frontier may randomly assign one at the gate unless you prepay.
### **Q3: What if I forget to check in?**
If you miss the cutoff, you’ll need to go to the airport. You may lose your ticket value if you’re a no-show.
### **Q4: Do I need to print my boarding pass?**
No, but it’s recommended. You can also use a mobile boarding pass.
### **Q5: Can I change my seat after checking in?**
Yes — but only before boarding and for a fee (unless Flex ticket).
---
## **16. Final Thoughts: Plan Ahead and Travel Smoothly**
Checking in for your Frontier Airlines flight shouldn’t be stressful. In fact, most check-in issues are preventable with just a little preparation.
Remember these golden rules:
* Check in early (24 hours before)
* Use the app or website for ease
* Verify all info matches your ID
* Pay for bags and seats in advance
* Go to the airport early if needed
And if anything goes wrong? Use this guide to troubleshoot quickly — and get back to enjoying your trip.
Sign in with Wallet
Connect another wallet