Frontier updated the flight schedule

Frontier has announced changes to its route schedule.

The newly added low cost flights are:
Alliance (AIA) - Milwaukee (MKE) [see flight details]
Alliance (AIA) - Denver (DEN) [see flight details]
Baltimore (BWI) - Denver (DEN) [see flight details]
Baltimore (BWI) - Milwaukee (MKE) [see flight details]
Bellingham (BLI) - Milwaukee (MKE) [see flight details]
Bellingham (BLI) - Denver (DEN) [see flight details]
Bismarck (BIS) - Milwaukee (MKE) [see flight details]
Bismarck (BIS) - Denver (DEN) [see flight details]
Canyonlands Field (CNY) - Milwaukee (MKE) [see flight details]
Canyonlands Field (CNY) - Denver (DEN) [see flight details]
Central Illinois (BMI) - Milwaukee (MKE) [see flight details]
Central Illinois (BMI) - Denver (DEN) [see flight details]
Chadron (CDR) - Milwaukee (MKE) [see flight details]
Chadron (CDR) - Denver (DEN) [see flight details]
Cheyenne (CYS) - Milwaukee (MKE) [see flight details]
Cheyenne (CYS) - Denver (DEN) [see flight details]
Chicago (ORD) - Milwaukee (MKE) [see flight details]
Chicago (ORD) - Denver (DEN) [see flight details]
Cincinnati (CVG) - Milwaukee (MKE) [see flight details]
Cincinnati (CVG) - Denver (DEN) [see flight details]
Clovis (CVN) - Milwaukee (MKE) [see flight details]
Clovis (CVN) - Denver (DEN) [see flight details]
Columbia (COU) - Milwaukee (MKE) [see flight details]
Columbia (COU) - Denver (DEN) [see flight details]
Cortez (CEZ) - Milwaukee (MKE) [see flight details]
Cortez (CEZ) - Denver (DEN) [see flight details]
Denver (DEN) - Kingman (IGM) [see flight details]
Denver (DEN) - Cincinnati (CVG) [see flight details]
Denver (DEN) - Western Nebraska (BFF) [see flight details]
Denver (DEN) - McCook (MCK) [see flight details]
Denver (DEN) - Cortez (CEZ) [see flight details]
Denver (DEN) - Show Low (SOW) [see flight details]
Denver (DEN) - Lehigh Valley (ABE) [see flight details]
Denver (DEN) - Canyonlands Field (CNY) [see flight details]
Denver (DEN) - Ely (ELY) [see flight details]
Denver (DEN) - Telluride (TEX) [see flight details]
Denver (DEN) - Bellingham (BLI) [see flight details]
Denver (DEN) - Page (PGA) [see flight details]
Denver (DEN) - Great Bend (GBD) [see flight details]
Denver (DEN) - Visalia / Fresno Area, CA (VIS) [see flight details]
Denver (DEN) - The Eastern Iowa (CID) [see flight details]
Denver (DEN) - Ernest A. Love Field (PRC) [see flight details]
Denver (DEN) - Harrisburg (MDT) [see flight details]
Denver (DEN) - Chicago (ORD) [see flight details]
Denver (DEN) - Riverton (RIW) [see flight details]
Denver (DEN) - Kearney (EAR) [see flight details]
Denver (DEN) - Liberal Mid-America (LBL) [see flight details]
Denver (DEN) - Columbia (COU) [see flight details]
Denver (DEN) - Sheridan (SHR) [see flight details]
Denver (DEN) - San Luis Valley (ALS) [see flight details]
Denver (DEN) - Minot (MOT) [see flight details]
Denver (DEN) - Dodge City (DDC) [see flight details]
Denver (DEN) - South Bend (SBN) [see flight details]
Denver (DEN) - Baltimore (BWI) [see flight details]
Denver (DEN) - North Platte (LBF) [see flight details]
Denver (DEN) - Four Corners (FMN) [see flight details]
Denver (DEN) - Vernal (VEL) [see flight details]
Denver (DEN) - Worland (WRL) [see flight details]
Denver (DEN) - Central Illinois (BMI) [see flight details]
Denver (DEN) - Pierre (PIR) [see flight details]
Denver (DEN) - Piedmont Triad Intl (GSO) [see flight details]
Denver (DEN) - Cheyenne (CYS) [see flight details]
Denver (DEN) - Punta Cana (PUJ) [see flight details]
Denver (DEN) - Huron (HON) [see flight details]
Denver (DEN) - Laramie (LAR) [see flight details]
Denver (DEN) - Clovis (CVN) [see flight details]
Denver (DEN) - Shenandoah Valley Airport / Staunton, VA (SHD) [see flight details]
Denver (DEN) - Merced, CA (MCE) [see flight details]
Denver (DEN) - Dickinson (DIK) [see flight details]
Denver (DEN) - Grant County (SVC) [see flight details]
Denver (DEN) - Alliance (AIA) [see flight details]
Denver (DEN) - Montego Bay (MBJ) [see flight details]
Denver (DEN) - Fargo (FAR) [see flight details]
Denver (DEN) - Trenton, NJ (TTN) [see flight details]
Denver (DEN) - Sloulin Field (ISN) [see flight details]
Denver (DEN) - Bismarck (BIS) [see flight details]
Denver (DEN) - Phoenix/Williams Gateway (AZA) [see flight details]
Denver (DEN) - Great Falls (GTF) [see flight details]
Denver (DEN) - Chadron (CDR) [see flight details]
Denver (DEN) - Pueblo Memorial (PUB) [see flight details]
Denver (DEN) - Hays (HYS) [see flight details]
Dodge City (DDC) - Denver (DEN) [see flight details]
Dodge City (DDC) - Milwaukee (MKE) [see flight details]
Ely (ELY) - Milwaukee (MKE) [see flight details]
Ely (ELY) - Denver (DEN) [see flight details]
Ernest A. Love Field (PRC) - Milwaukee (MKE) [see flight details]
Ernest A. Love Field (PRC) - Denver (DEN) [see flight details]
Four Corners (FMN) - Denver (DEN) [see flight details]
Four Corners (FMN) - Milwaukee (MKE) [see flight details]
Milwaukee (MKE) - Bellingham (BLI) [see flight details]
Milwaukee (MKE) - Page (PGA) [see flight details]
Milwaukee (MKE) - Great Bend (GBD) [see flight details]
Milwaukee (MKE) - Visalia / Fresno Area, CA (VIS) [see flight details]
Milwaukee (MKE) - The Eastern Iowa (CID) [see flight details]
Milwaukee (MKE) - Ernest A. Love Field (PRC) [see flight details]
Milwaukee (MKE) - Harrisburg (MDT) [see flight details]
Milwaukee (MKE) - Kearney (EAR) [see flight details]
Milwaukee (MKE) - Chicago (ORD) [see flight details]
Milwaukee (MKE) - Riverton (RIW) [see flight details]
Milwaukee (MKE) - Liberal Mid-America (LBL) [see flight details]
Milwaukee (MKE) - Columbia (COU) [see flight details]
Milwaukee (MKE) - Sheridan (SHR) [see flight details]
Milwaukee (MKE) - San Luis Valley (ALS) [see flight details]
Milwaukee (MKE) - Minot (MOT) [see flight details]
Milwaukee (MKE) - Dodge City (DDC) [see flight details]
Milwaukee (MKE) - South Bend (SBN) [see flight details]
Milwaukee (MKE) - Baltimore (BWI) [see flight details]
Milwaukee (MKE) - North Platte (LBF) [see flight details]
Milwaukee (MKE) - Four Corners (FMN) [see flight details]
Milwaukee (MKE) - Vernal (VEL) [see flight details]
Milwaukee (MKE) - Worland (WRL) [see flight details]
Milwaukee (MKE) - Central Illinois (BMI) [see flight details]
Milwaukee (MKE) - Pierre (PIR) [see flight details]
Milwaukee (MKE) - Piedmont Triad Intl (GSO) [see flight details]
Milwaukee (MKE) - Cheyenne (CYS) [see flight details]
Milwaukee (MKE) - Punta Cana (PUJ) [see flight details]
Milwaukee (MKE) - Huron (HON) [see flight details]
Milwaukee (MKE) - Laramie (LAR) [see flight details]
Milwaukee (MKE) - Clovis (CVN) [see flight details]
Milwaukee (MKE) - Shenandoah Valley Airport / Staunton, VA (SHD) [see flight details]
Milwaukee (MKE) - Merced, CA (MCE) [see flight details]
Milwaukee (MKE) - Dickinson (DIK) [see flight details]
Milwaukee (MKE) - Grant County (SVC) [see flight details]
Milwaukee (MKE) - Alliance (AIA) [see flight details]
Milwaukee (MKE) - Montego Bay (MBJ) [see flight details]
Milwaukee (MKE) - Fargo (FAR) [see flight details]
Milwaukee (MKE) - Trenton, NJ (TTN) [see flight details]
Milwaukee (MKE) - Sloulin Field (ISN) [see flight details]
Milwaukee (MKE) - Bismarck (BIS) [see flight details]
Milwaukee (MKE) - Phoenix/Williams Gateway (AZA) [see flight details]
Milwaukee (MKE) - Great Falls (GTF) [see flight details]
Milwaukee (MKE) - Chadron (CDR) [see flight details]
Milwaukee (MKE) - Pueblo Memorial (PUB) [see flight details]
Milwaukee (MKE) - Hays (HYS) [see flight details]
Milwaukee (MKE) - Kingman (IGM) [see flight details]
Milwaukee (MKE) - Cincinnati (CVG) [see flight details]
Milwaukee (MKE) - Western Nebraska (BFF) [see flight details]
Milwaukee (MKE) - McCook (MCK) [see flight details]
Milwaukee (MKE) - Cortez (CEZ) [see flight details]
Milwaukee (MKE) - Show Low (SOW) [see flight details]
Milwaukee (MKE) - Lehigh Valley (ABE) [see flight details]
Milwaukee (MKE) - Canyonlands Field (CNY) [see flight details]
Milwaukee (MKE) - Ely (ELY) [see flight details]
Milwaukee (MKE) - Telluride (TEX) [see flight details]
Grant County (SVC) - Milwaukee (MKE) [see flight details]
Grant County (SVC) - Denver (DEN) [see flight details]
Great Bend (GBD) - Milwaukee (MKE) [see flight details]
Great Bend (GBD) - Denver (DEN) [see flight details]
Great Falls (GTF) - Milwaukee (MKE) [see flight details]
Great Falls (GTF) - Denver (DEN) [see flight details]
Harrisburg (MDT) - Milwaukee (MKE) [see flight details]
Harrisburg (MDT) - Denver (DEN) [see flight details]
Hays (HYS) - Milwaukee (MKE) [see flight details]
Hays (HYS) - Denver (DEN) [see flight details]
Fargo (FAR) - Milwaukee (MKE) [see flight details]
Fargo (FAR) - Denver (DEN) [see flight details]
Huron (HON) - Milwaukee (MKE) [see flight details]
Huron (HON) - Denver (DEN) [see flight details]
Kearney (EAR) - Milwaukee (MKE) [see flight details]
Kearney (EAR) - Denver (DEN) [see flight details]
Kingman (IGM) - Milwaukee (MKE) [see flight details]
Kingman (IGM) - Denver (DEN) [see flight details]
Laramie (LAR) - Milwaukee (MKE) [see flight details]
Laramie (LAR) - Denver (DEN) [see flight details]
Lehigh Valley (ABE) - Milwaukee (MKE) [see flight details]
Lehigh Valley (ABE) - Denver (DEN) [see flight details]
Liberal Mid-America (LBL) - Milwaukee (MKE) [see flight details]
Liberal Mid-America (LBL) - Denver (DEN) [see flight details]
McCook (MCK) - Milwaukee (MKE) [see flight details]
McCook (MCK) - Denver (DEN) [see flight details]
Merced, CA (MCE) - Milwaukee (MKE) [see flight details]
Merced, CA (MCE) - Denver (DEN) [see flight details]
Minot (MOT) - Denver (DEN) [see flight details]
Minot (MOT) - Milwaukee (MKE) [see flight details]
Montego Bay (MBJ) - Milwaukee (MKE) [see flight details]
Montego Bay (MBJ) - Denver (DEN) [see flight details]
North Platte (LBF) - Denver (DEN) [see flight details]
North Platte (LBF) - Milwaukee (MKE) [see flight details]
Page (PGA) - Milwaukee (MKE) [see flight details]
Page (PGA) - Denver (DEN) [see flight details]
Phoenix/Williams Gateway (AZA) - Milwaukee (MKE) [see flight details]
Phoenix/Williams Gateway (AZA) - Denver (DEN) [see flight details]
Piedmont Triad Intl (GSO) - Milwaukee (MKE) [see flight details]
Piedmont Triad Intl (GSO) - Denver (DEN) [see flight details]
Pierre (PIR) - Milwaukee (MKE) [see flight details]
Pierre (PIR) - Denver (DEN) [see flight details]
Pueblo Memorial (PUB) - Milwaukee (MKE) [see flight details]
Pueblo Memorial (PUB) - Denver (DEN) [see flight details]
Punta Cana (PUJ) - Milwaukee (MKE) [see flight details]
Punta Cana (PUJ) - Denver (DEN) [see flight details]
Riverton (RIW) - Milwaukee (MKE) [see flight details]
Riverton (RIW) - Denver (DEN) [see flight details]
San Luis Valley (ALS) - Denver (DEN) [see flight details]
San Luis Valley (ALS) - Milwaukee (MKE) [see flight details]
Shenandoah Valley Airport / Staunton, VA (SHD) - Milwaukee (MKE) [see flight details]
Shenandoah Valley Airport / Staunton, VA (SHD) - Denver (DEN) [see flight details]
Sheridan (SHR) - Milwaukee (MKE) [see flight details]
Sheridan (SHR) - Denver (DEN) [see flight details]
Show Low (SOW) - Milwaukee (MKE) [see flight details]
Show Low (SOW) - Denver (DEN) [see flight details]
Sloulin Field (ISN) - Milwaukee (MKE) [see flight details]
Sloulin Field (ISN) - Denver (DEN) [see flight details]
South Bend (SBN) - Denver (DEN) [see flight details]
South Bend (SBN) - Milwaukee (MKE) [see flight details]
Telluride (TEX) - Milwaukee (MKE) [see flight details]
Telluride (TEX) - Denver (DEN) [see flight details]
The Eastern Iowa (CID) - Milwaukee (MKE) [see flight details]
The Eastern Iowa (CID) - Denver (DEN) [see flight details]
Dickinson (DIK) - Milwaukee (MKE) [see flight details]
Dickinson (DIK) - Denver (DEN) [see flight details]
Trenton, NJ (TTN) - Milwaukee (MKE) [see flight details]
Trenton, NJ (TTN) - Denver (DEN) [see flight details]
Vernal (VEL) - Denver (DEN) [see flight details]
Vernal (VEL) - Milwaukee (MKE) [see flight details]
Visalia / Fresno Area, CA (VIS) - Milwaukee (MKE) [see flight details]
Visalia / Fresno Area, CA (VIS) - Denver (DEN) [see flight details]
Western Nebraska (BFF) - Milwaukee (MKE) [see flight details]
Western Nebraska (BFF) - Denver (DEN) [see flight details]
Worland (WRL) - Milwaukee (MKE) [see flight details]
Worland (WRL) - Denver (DEN) [see flight details]

The tickets for the newly introduced low cost flights are already available online. Frontier is a cheap airline that operates on 270 low cost routes.